<human>: I recently got into a relationship with my girlfriend even though it has been short and we moved really fast into the relationship. We've already had sex which I think has complicated things. The one night we hung out to meet each other she seemed fine, but the other night she was a bit tipsy and I took her over to her friends house to "chill" but ended up watching both of them smoke a blunt. Weed is ok, but the fact that I can't seem to talk to her with her having a clear mind upsets me. She also hasn't said much to me in the last couple of days and I feel like I'm being ignored and also feel like I was her sexual itch for the week last week. I really care about her and I don't want her to fall into the wrong hole, but I want her to understand I care and that I'm here for her.

Can you summarize the given text in a few sentences?
<bot>: Girlfriend of less than a month acts like she's not into me after having sex with me and us knowing each other for less than a month.