My husband (29M) added some girl on socials from the bar after uninviting me (26F) to a night out with his friends and I’m not sure what to do.

So, my husband (29M) and I (26F) have been married for two years and are currently living together. His one friend (28M) was visiting for the weekend and normally we go out together because I also get along with him. This time I was uninvited and my husband was super aggressive/weird about me going out. I noticed on his phone that a girl (27F) had added him the day after and they’re mutual friends with someone in the group but a) he made NO mention of her and b) he claimed it was a “guys’ night.”

Im not sure what I should do but I’m nervous about it because I caught him microcheating with someone (25F) early last year and it feels like something weird is going on. Any advice because I feel like I’m being over the top about this and I’m worried it’s going to start a fight with him if he knows I looked at his phone?