<human>: Summarize the given text in a few sentences.

She's 18. We've been official bf/gf for about a month, known each other for about two months. We went out for about 4-5 times so far. We've had sex on our first date (unsure if related or not).

I don't go out often myself, but she has went to 2/3 small (8-10 people) parties while we were in a relationship, she likes to get drunk at parties (I know, classy). She did tell me that she was going to the parties but, in between she was seeing some of her guy friends, nothing special according to her, hang out, card games, poker, yet she only told me about those encounters a day or two afterwards. I want to trust her yet its hard when she's hiding some things from me like that.

This weekend my coworker friends asked me to go out with them to a bar for a few drinks and relax after wrok, I agreed. I'm not going with the intention to hook up with somebody, nor am I going  to get drunk. Now, I'm wondering what would be the consequences if I tell her about going out with friends to a bar, and how would she react if I didn't tell her about it or told her a day or two after, like she does.

Any advice? Related situations? Should I just talk to her about it and see what happens? Where do you draw the line?

-We see each other about once/twice a week
-She's a horrible communicator, mostly bad at texting.
-She mentioned wanting me to meet her friends (which I agreed upon and encouraged more than once) yet procrastinates when it comes to making plans toward that purpose.
<bot>: early into a relationship, how would you feel if your bf/gf went out with friends to a bar?