Foreplay

So I’ve never really done any foreplay to a guy before. I’ve only hooked up with guys by having sex so usually I’m getting the foreplay and I just tease them and then have sex (bc guys finish too fast). Now I’m serious with someone and I always initiate sex and he won’t do anything until I do or say something about sex. Idk what to do because I want to have sex but if I do any foreplay he will finish before we even get to sex.