Advice on gay relationship?

Were going on 3 years together, and having a big gay wedding in March. Its a big to-do since we live in a small town where everybody is in everbody elses business. The other day I was hanging out with my partners sister, I told her how we had went to the attorney, signed powers of attorneys, afadavids forthis and that, a will and put all or assets together in a Trust to secure and somewhat legalize our relationship before the bi wedding. She then tells me how the whole family is so happy he and I are together despite their religious views, and that he brothe (my fiance) is a completely different person with me, that he really loves me. I ask how he was so different? Her answer was that he was a ';big player'; and '; big cheater'; and never wanted to settle down. I asked why she felt that he was a big cheater? she then said ';well, its not that he had a big problem with it, but he dated losers, I woulda cheated on them too!'; The problem for me is that he was open and upfront about his past, that he was no angel. I did ask him though if hed cheated on his boyfriends, and since he had only been in 2 serious relationships, both lasting less than 2 years, he said, no he didnt cheat and that he believes in monogamy. Now Im hearing otherwise from his own sister! I asked him about this, he still says he wasnt a cheater, and isnt a cheater and that he is going to ask her why she said that. hes been totally honest about everything since weve been together, should this be a red flag?, even though our relationship is great, I dont like lies. Any advice here?Advice on gay relationship?
Maybe she is just wrong? Its good you asked him about it. Just because she thinks he cheated does not mean he did.Advice on gay relationship?
i would just believe him if he cheated why shouldn't he tell you
My advice: do what you can to get the story cleared up, but don't get cold feet. If he's been honest w/ you so far you have no reason to suspect that he'll be dishonest in the future. You are more armed than anyone else he's been in a relationship w/ and that means something. That he's willing to trust you w/ himself and his life. Very important for a life partner. So take a step back and realize that it may just be a difference in perception. See if you can get more facts after his discussion w/ his sister and prepare yourself to not let his past keep you from a bright future together. It seems to me you're already off to a great start. So warm those cold feet up against his hot bod, and you have my heartfelt congratulations and well wishes for a long and happy marriage to the man you love.
He might be ashamed of his cheating and may have stopped, the reason he didn't want u to kno was so u didn't think he was cheating on you, i wouldn't look too much into it if i were u, he has probably cganged 4 the better since meeting u. But never rule it out as a possibility, if he starts acting strange, confront him but i wouldn't be to worried though, if he is marrying u then he is serious about u and probably isn't cheating.