my bf lied!!

Reem
we met through tinder and it was amazing but then i found out he still uses the app even when we started dating i told him i didnt like it bc its a dating app lol why he said he had a bet with his friend about the number of matches they could get. anyway he promised me to not use it again if it made me upset but then i found out months later he still uses it and it made me furious that he lied to me and didn't keep his promise i feel like i cant trust him anymore and think he's talking to someone else!!! what should i do