Hi I’m 19 and I have been with my boyfriend for 4 years. I’ve recently been having some thoughts that he is having sexual encounters with his brother’s guy friend whom also lives here. So recently he’s been hanging out with this friend a lot. They work together and then when they come home my boyfriend will go straight out the back house till about 9 at night. With his friend and brother. So I’ve gone out with my partner, his friend and brother last couple of weekends and it just seems my partner gets too close to him.

So after all this suspicion I decided to just ask him. So first of all I told him I didn’t like him giving all hi five and energy to his friend, then I asked what was he doing all these hours blah blah. Then I asked him if he was screwing his friend and he just laughed and said WTH I’m not gay. Thing is he was so casual about me accusing him. Also I started looking into his old Facebook’s from when we first started dating. I know snooping is wrong and nasty but I couldn’t help it. So some comments that he would post would go something like this
Friend: doing bro you should come around soon
Bf: haha omw you fag suck a dik.
Friend: you suck
Bf: you like it
He uses gay and fag to abit of his friends

Well from experience I completely understand your suspicions but my husband and his friend work together and after work we all always have dinner together and they have a beer and I just take it as Guy time

If he is around the same age, he wants the guy time still. Fag would not be a term hardly any homosexual man will use. It is terms immature men or boys will call each other following around.

Sounds like you are making something out of nothing,

Let it go and stop snooping. Take his word he isn't gay.