Relationship Probs.

My boyfriend cheated on me, turns out he had been lying about it for months. Just  recently I found out. I went crazy when I found out and the first week of knowing was an emotional roller coaster (thank God for my bestfriend for helping me keep it together). My now ex boyfriend said he wants to try again and it was a mistake, this is the third time something happened where trust was broken. When I asked if I had cheated would he stay, he answered no. Would you guys stay if you were in this situation? 😩🙁