<human>: My girlfriend (I'll call her M) has slept with about 30 guys from the age of 16 - 21, (UK and legal) yet she has a very shy and prudish regard to sex and intimacy. She will give blowjobs when drunk, and almost always go along with it if I initiate sex..but she will never be the one to engage, or tell me she wants to have sex. She claims like she has always been like this.

She claims to love sex, and love me, but this seems strange for a girl to be so shy with so many partners. I trust her completely so I don't see any of this as a red flag to her cheating on me when she drinks (like a few commented from Askmen).

Can you condense the text into a few key points?
<bot>: girlfriend is complete opposite to those sexually open girls you see about that have had like 3 partners. Very shy and reserved yet has slept with almost 30 guys. Advice/comments??