What are guys real motives?

How do you know if a guy really likes you or just wants to get in your pants? All the guys I've been with, giving and recieving oral have been friends. But I don't know how to decifer their flirting.. this is why I haven't really had vaginal intercourse...

yet because a part of me wants to wait till I am in love and get those feelings returned too. Are guys just being nice to me so I can give them blow jobs and have sex?

Goodnews first, Congratulations on saving vaginal intercourse for when you know his intentions. BUT, Young lady, Im not old, just old fashioned when I say this; you are the new generation that gives the blowjob first and tries to find out whether there is a relationship later. Since it usually takes 6 months of going out together for you to really know a person, and that is any friend, not just boyfriends, if you wait to KNOW the guy, you will know whether they are in for the long haul or the free blowjob. I might add, that as common as oral sex seems to be now, is SHOULD still be special- so make sure to give it to a special guy not a creep.

Its really hard. Like an hour ago I gave a blow job to this classmate of mine in college. I'm 22 and he's 32 or something. Its hard to get out of that funk. But like this guy and some others I've been with I don't have any emotional feelings towards so it doesn't bother me to do sexual things with. However, when I do like someone and they seem to flirt with me a lot thats when I feel insecure about what their intetions are and if their just being nice and flirty with me to have sex or just flirt to flirt. But I guess thats stupid because no guy flirts for the sake of flirting. All guys have intentions right?