Help..I can't stand my head

I posted this yesterday but no one said anything and I really need help.

So recently I told my boyfriend that I hasn't been fully honest about the people I hung out with the other day. There was no reason for me not to besides the fact that I was scared he would be mad other guys were there. Of course, not being honest the first time and saying it was only me and my two girlfriends. I know it was wrong, but it's not like I had been flirting or beIN unloyal, I just shouldn't have lied...

I got it off my chest and we had the fight and are working through it, but now I'm getting in my head thinking I was dishonest another time. I was and I wasnt I guess... I don't know I feel like if I don't tell every little detail I'm a lair. Awhile back me and my friend went to hang out at an a mutual friend, more of an acquaintance of mine, but her friend. I had been friends with his older sister so had hung out with him a bit in high school, probably like 4 times. They moved schools which is when he became friends with my friend , so then in later years when I'd hang out with my friend , me and her would go over and hang out with him and bunch of their friends. Im a floater so I go with the flow and hang out with whoever.

Well when we went to hang out, we went to him and his girlfriends apartment where they live with two other roommates, a couple. I told my boyfriend that me and my friend had gone to one of her friends houses , but I specified the girl not the guy. I said how her boyfriend and their roommates were there. I just feel like I'm lying , bc it's not like I think of this guy as my friend, hadn't seen him in over a year until that day, and I had plans with my friend , not with them. I know him and have hung out with him, but again, he's not really a friend of mine, I don't keep in touch, never have. I just feel like not mentioning that I knew this guy in the past is dishonest. But I'm not even into him and he has a girlfriend and his girlfriend is also friends with my friend so I just , uhg. My brain hurts. I hate feeling dishonest, i wasn't trying to be I just didn't think anything else was relevant and didn't want to be like "were hanging out with our guy friend" bc he'd get jealous for no reason, especially bc this guy isnt even a friend. I only have 4 really close friends , and they're all girls.