I've found that the situation around having sex and the person with whom you are having sex can be very important to the amount of enjoyment you get out of it (especially in the beginning before you have your skills and techniques honed, and before you really know what acts, positions and situations really get you off.)
If you're fucking girls, simply because they'll let you fuck them and letting guys suck you off simply because they want to, you're not going to enjoy it as much as when you can feel the sexual chemistry between you and your partner.
Also once you've had experience with sexual chemistry you'll learn how you can make it come to the surface, and that broadens the possibility of sexual partners.
I would look at it less clinically (I've stuck it in seven different girl's pussys, three guys have given me blow jobs and I've fucked two girls and two guys in the ass.) and instead look for someone who is really looking for a sexual adventure that night. If that's what the two of you are looking for, you usually can make magic.
Be patient, once you know the mystery and magic of fucking are out there, it's much easier and much more enjoyable to when you're horny fuck whoever is willing.
Also, if you concentrate on being the best lover your partner has ever had, work at perceiving what they sexually want and giving it them, really make them believe you care that they have a good orgasm or ejaculation, you'll find the sex just gets better and better.
That old saying, to have a friend be one, is true and it especially applies to the bedroom. Good luck, have fun, I hope you fuck all the people you really want to and you really, really enjoy it. It can be so hot. And be careful and be safe. If you are you can keep on fucking and sucking as long as you're alive, and that's one of the objects of the game.