There are 2 things:

1st: Men and women are never friends like men would be with each other or women with each other. I have had this conversation with many many guys with real life friends and online friends and everyone agreed. Out of all the guys I have ever known only one was hanging out with girls as a friend and he turned out to be gay or bi. I cannot say if this is the case from women’s perspective but as a guy I would never text a girl or hang out with a girl if I wasn’t interested in her. Of course we can be friends as co-workers, in school or have a chat with neighbours etc. but not go for a drinks and keep texting regularly. ESPECIALLY if hes hiding it from you, it’s not just friendly chat.

2nd: If you have been attracting unfaithful men in the past and there haven’t been any change, the past will repeat itself. If you have problems trusting men in relationship and you have belief or fear that men will cheat on you, you will attract unfaithful partners. You create your reality mostly out of your subconscious believes and fears. Have you ever had lucid dreaming experience? Meaning in the dream you realize you are dreaming and you are able to create anything in the dream “reality”. If you are afraid of something it will pop up and as soon as you “relax” that fear or keep thinking something positive it will change into that. It’s exactly same with this “waking reality” expect with slightly different rules with gravity and time.

When you recognize the “reality of the reality” nothing can really bother you. But when we are very serious about life and we invest our peace of mind expecting people to behave in certain way life really kicks your ass to wake you up so to speak. I’m not going to advice what to do with your relationship or anything. I just wanna point straight to the root problem