<human>: So I've been with my girlfriend for 4 years and it's been great so far. A bit bumpy here and there but nothing we couldn't handle. I've always known that her brothers (she has 2 older brothers) and her cousins all smoke weed. I think they're great people. I'm just not a big fan of smoking and doing weed in general. During family get together (like the recent Thanksgiving holiday) her brothers and cousins do weed. My girlfriend wants to spend that with her family and relatives but she sometimes feel left out for not doing weed. It doesn't help that she gets pressured all the time to try it even just once. 

I've told her that I'm not a big fan of weed at all and that it's one of my dealbreakers. For the record I have friends who do weed and I don't judge them at all. It's just my personal preference to have a girlfriend who doesn't do weed. She tells me she's able to say no when she gets asked, and I tell her that it makes me happy that she cares. I know she doesn't want to do it, and I know she loves me a lot, but I'm scared she'll give in to the pressure at some point in the future. When that happens, I have no idea how I should deal with it. 

On one hand I've told her it's a dealbreaker so I'd want to follow through because I know it'll only make me unhappy, but on the other hand we've been together for 4 years and it seems like a sudden thing to end it right away. I'm so confused because I've never been in this situation before.

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<bot>: Girlfriend hates smoking, hates weed, but gets pressured by family members during family get togethers. Weed is a dealbreaker for me. If she gives in to the pressure, should I go?