sorry, but that whole paragraph you have typed there is completely nonsensical. If you're not even in love with someone, why would you want to get so physically involved and committed to them. Because its their birthday? That's crazy. Being that intimate (oral sex and implied vaginal intercourse) with someone should involve a deep emotional connection first, and a month is definitely not enough time to be sure that type of connection is there. Right now you're hormones are flying everywhere cause the relationship is new and it's obviously clouding your judgement on how to progress in a healthy, steady relationship.
You need to slow down and think. Sometimes at such a young age this can actually RUIN the whole relationship. And also consider things like, what if you break up? Do you go to the same school? Hang around with the same people? Do you wanna walk past the guy you sucked off for a birthday present everyday and live with that in the back of your head? it'd be hard.
Also some big ones are, what if you get pregnant? What if he has an STD you're unaware of? You've only been together a month; how do you know he hasn't been with a girl and doesn't feel comfortable telling you yet because the relationship is new? Sexual interaction is NOT meant as a "present" or something done out of "really liking each other" and when its done under such pretenses, it can have disastrous outcomes.