Ok so my husband and I have been together for 5 years, 3 of which we’ve been married for I’ve never once suspected my husband of cheating on me or anything- he’s never given me a reason to, but lately things have changed.

I think that my husband may be cheating on me with his male best friend(T); they’re constantly texting but only on Snapchat and they don’t save messages or anything, if T’s girlfriend is home when my husband goes over to their place he comes home very upset, both my husband and T get upset if myself or T’s girlfriend do anything with them they only ever want to be alone, they’ve been spending a lot of late nights together alone and whenever my husband comes home he immediately showers and he’s never interested in sex after he’s been with T.

Yesterday when things were getting hot and heavy my husband mentioned wanting a threesome (my husband is typically pretty vanilla in the bedroom, it took over a year just for me to bring handcuffs/restraints in) wanting a threesome took me by surprise but then he said he wanted a threesome with his best friend (T)

I might just be overthinking things, but when I previously brought up a threesome and having it be another girl involved he got very defensive and said he wasn’t interested in threesomes and was upset with the fact that I’ve brought it up but now he wants one and wants his best friend involved

Update; trying to get some sort of proof of my husband and T’s infidelity, I know if I just flat out ask him he’ll deny it so I need some sort of proof