cheating men.

my fiance went "missing" last thurday i went crazy trying to find him my worst fear was that he was hurt somewhere. after hrs . of looking . he text me saying he fell asleep when he clearly didnt. we fought days about it sunday his ex Gf new boytoy messages me asking me if me and him where still together i said yes why wouldn't we be . He then proceeds to tell me he cought him in bed with his woman . . I called him out on it he proceeded to lie. so i finnally called her he snatched my phone and told me he cheated. idk why its so frustrating. here i am trying to forgive him but its so hard i Love this man with everything in me . we are Trying to have kids . why would he do this to me. when they where together she cheated on him all the time . and here i am being a perfect gf. i cook clean do everything for him and work 2 jobs . he gets laid everyday. so why me? continued in comments .....