Steve loves having sex with virgins. While it might not be objectively the best sex ever, he loves making sure that his partners get the best possible first time, he's a generous and attentive lover.

Eddie is a virgin.

Steve Harrington is on the case.

(I usually prefer a Steve that has figured out his bisexuality and maybe has had some experience, but newly bi!Steve is good too as long as he doesn't have much of a crisis about it.)