Questions & Answers about Við verðum alltaf glöð þegar við hittumst.
Verðum is the 1st person plural present of að verða, which basically means to become / to get.
So:
- Við verðum alltaf glöð = We always become/get happy
- Við erum alltaf glöð = We are always happy
In this sentence, verðum suggests a change of state: every time we meet, we become happy (we weren’t necessarily happy just before). Using erum would emphasize a more constant state rather than that change caused by the meeting.