I'll try to keep this short and simple for you all.

I only found out about TRP two weeks ago

-LTR for nearly 6 months. -everything is fantastic. -she seems to respect me, trust me, and love me. -buys me expensive shit...(maybe I've been a gold digger this whole time.../s) -doesnt ask for much, other than being fairly needy, hates when I leave, etc. -tells me how much she loves me, cares about me, how she respects me, tells me I'm perfect, all of that good stuff.

Here's the problem. The other day I found out she was with someone she had fucked in the past. (They've been sort of acquaintances since then.) She never told me, I had to figure that out through a friend. When I asked her about it, she was "honest".

-didn't deny hanging out. -she smokes weed often, said they just smoked together. -says they were "just smoking in his room" -"nothing happened" That last one. Oof. From reading here, it seems as if "nothing happened," couldn't be further from the truth.

I tell her I'm not cool with that. She apologized, said she just wanted someone to smoke with while I was at work, says she feels bad about it.

Normally if she's hanging out with someone, she tells me. If her ex (different one) hits her up, asking to get back together, she tells me. If she's going to a party, she lets me know, and asks if I mind. I have never asked her to tell me, she chooses to. She has never once made me feel suspicious.

This time, she didn't let me know before, during, or after. And probably wouldn't have brought it up if I hadn't. That's my main concern.

I usually don't care if she is hanging out with guy friends. Or if a guy is hitting on her. I trust her, and I'm confident enough in myself I don't mind.

Something about this time has my gut telling me something is up. Any advice/opinions would be appreciated.