Ο σύντροφός μου με βοηθάει όταν νιώθω ανασφαλής.

In this sentence, σύντροφος most naturally means partner in the sense of a romantic partner.

So:

• ο σύντροφός μου = my partner

Depending on context, σύντροφος can also mean companion or comrade, but in everyday modern usage, ο/η σύντροφός μου very often means someone's boyfriend, girlfriend, spouse, or partner.

Greek uses the definite article much more often than English does.

So Greek normally says:

• ο σύντροφός μου = literally the partner my
• natural English: my partner

Using the article with possessed nouns is very common in Greek:

• ο φίλος μου = my friend
• η μητέρα μου = my mother
• το σπίτι μου = my house

So ο is completely normal here.

This is a very common thing that confuses learners.

The basic word is:

• σύντροφος

When it is followed by an enclitic like μου, it often gets an extra written accent:

• ο σύντροφός μου

Why? Because Greek wants to preserve the stress pattern in pronunciation when a weak word like μου follows.

So:

• σύντροφος = the basic noun
• σύντροφός μου = my partner

This does not mean the word changes case or meaning. It is mainly a stress/accent rule caused by the following enclitic μου.

Here μου means my.

It is the weak possessive form used after the noun:

• ο σύντροφός μου = my partner

Greek often expresses possession this way:

• το βιβλίο μου = my book
• η αδερφή μου = my sister

So although μου can also mean to me or of me in other contexts, here it functions as my.

με means me, and it is the direct object of the verb.

So:

• με βοηθάει = helps me

Greek uses weak object pronouns before the verb:

• με = me
• σε = you
• τον / την / το = him / her / it

Examples:

• Με βλέπει. = He/She sees me.
• Με βοηθάει. = He/She helps me.

So in your sentence:

• Ο σύντροφός μου με βοηθάει = My partner helps me

That is just the normal Greek pattern for weak object pronouns.

English:

• helps me

Greek:

• με βοηθάει

So Greek usually puts these short pronouns before the finite verb:

• με αγαπάει = loves me
• σε ξέρει = knows you
• τον βλέπω = I see him

This is one of the basic word-order differences between Greek and English.

Yes. Both βοηθάει and βοηθά are used in Modern Greek.

So these are both possible:

• με βοηθάει
• με βοηθά

They both mean helps me.

Very roughly:

• βοηθάει may sound a bit fuller or a bit more colloquial/natural to many speakers
• βοηθά is also completely standard

You will see both forms in speech and writing.

Because the sentence describes a general / repeated situation, not one single event.

• Ο σύντροφός μου με βοηθάει όταν νιώθω ανασφαλής.
• My partner helps me when I feel insecure.

This means: whenever that situation happens, my partner helps me.

Greek often uses the present tense for this kind of habitual or general meaning, just like English does:

• Όταν κουράζομαι, κοιμάμαι νωρίς.
• When I get tired, I go to bed early.

όταν means when, while αν means if.

In this sentence:

• όταν νιώθω ανασφαλής = when I feel insecure

This suggests that this is a real or recurring situation.

If you used αν, the meaning would shift more toward if:

• αν νιώθω ανασφαλής = if I feel insecure

That is not impossible in some contexts, but όταν is the natural choice when you mean whenever this happens.

Because Greek often leaves out subject pronouns when they are already clear from the verb ending.

• νιώθω already means I feel

So Greek does not need εγώ unless you want emphasis or contrast.

Compare:

• νιώθω ανασφαλής = I feel insecure
• εγώ νιώθω ανασφαλής = I feel insecure / I am the one who feels insecure

This is very normal in Greek and is called a pro-drop feature.

ανασφαλής is an adjective meaning insecure.

Here it describes the omitted subject I from νιώθω:

• νιώθω ανασφαλής = I feel insecure

A useful thing to know is that ανασφαλής has the same form for:

• masculine singular
• feminine singular

Its neuter form is different:

• ανασφαλές

So a man or a woman can both say:

• Νιώθω ανασφαλής. = I feel insecure.

Greek, like English, often uses feel + adjective for emotional or psychological states.

So:

• νιώθω ανασφαλής = I feel insecure

This focuses on the person's internal feeling at that moment or in that situation.

You could also say things with είμαι in other contexts:

• είμαι ανασφαλής = I am insecure

That can sound more like a more general personal characteristic, while νιώθω ανασφαλής often feels more immediate and situational: I feel insecure.

Greek word order is more flexible than English word order, although the version you have is the most neutral and natural one:

• Ο σύντροφός μου με βοηθάει όταν νιώθω ανασφαλής.

Because Greek marks grammar in other ways, speakers can move parts around for emphasis. For example, you might hear variations in real speech, but the basic neutral structure is:

• subject: Ο σύντροφός μου
• object pronoun: με
• verb: βοηθάει
• time/clause: όταν νιώθω ανασφαλής

So yes, some variation is possible, but your sentence is the standard way to say it.

A rough pronunciation guide:

• νιώθω ≈ NYO-tho

  • νι here sounds like ny in canyon
  • θ is like th in think

• βοηθάει ≈ vo-ee-THA-ee

  • β in Modern Greek sounds like English v
  • η sounds like ee
  • θ again is th in think

Also:

• ανασφαλής ≈ a-na-sfa-LEES

The stressed syllable is the one with the accent mark:

• βοηθάει
• ανασφαλής