Emotional cheating

Man I'm so tired of men treating like I'm not only good enough for second place this has literally happened in every relationship that I've been in and some of you may be thinking well if it happens to you in a relationship maybe you're in a problem and I don't know how that could be I'm completely loyal cook or clean or give back rubs and my head game strong among other things among other things without getting to vulgar but this is the problem he's still in love with his bestfriend that doesn't even want him (of this I'm totally sure she told him several time herself and you can tell from their messages that she doesn't want him she just likes the attention he gets her) she is saved under wifey In his phone he texts her every day he been sending her dic pix and telling her much he love her I feel so stupid I really thought it would be different this time I feel so heartbroken - so this happened yesterday and I've already decided that I'm going to give him one more chance and I want to know your thoughts and opinions about it