Why is guy friend asking you such personal questions?

Answer 1

it really just depends on what he's asking you. if he's asking about your sex life, or if you'd do certain things if or if not in a relationship, then he could be interested because he might like you and might want to do certain things with you.

What else? Hmm...

Well, if he asked "If I suddenly asked you for a hand job, would you give me one, regardless if we are in a relationship or not?"

If he asked you that, then chances are he's interested...but only in a sexual way. But then again, if he's a sweet guy whom you've known for a long time, such as half a year to many longer, then he might like you.

If he gives you compliments, though not on a regular basis, calling you sweety, honey, or simply giving you nicknames, then yeah, he might like you.