Protect yourself and your partner from unwanted pregnancy. How to tell them you're in the market for some. See if she gives you sexual compliments. Read it and pass it on. If you've touched her breasts, and if you've touched each others private parts or even received oral sex from her, then it's more likely -- though not guaranteed -- that she may be ready to move further with you.
If your girlfriend does in fact want to have sex, you should follow all the tips of this other manual:
How to tell them you're in the market for some. Not sure what "How's Your Father? He lives in Montreal. I mean, we all do, to some extent. He believes we can have more sex and more love through honest and playful communication. Find the words that are authentic to you and come up with phrases that feel more natural when you say them.