Present Perfect vs Past Simple 4º ESO

Complete the text with the correct form of the verbs in brackets. Use the present perfect or the past simple.

Dear Helen

I (1) ……................. (not hear) from you for a long time. Is there a problem between us? You (2) ……................. (be) angry with me at Joe’s party last month, but I don’t understand why. We (3) ……................. (be) boyfriend and girlfriend for more than a year and I (4) ……................. never ……................. (feel) happier. I think I (5) ……................. (fall) in love with you as soon as I (6) ……................. (meet) you last summer. You (7) ……................. (make) me very happy since then. What (8) ……................. I ……................. (do) wrong at Joe’s party? Please explain.
Phone me soon.

All my love
Andy