Yes, it sounds like he had an orgasm. Yes, many guys can climax from little more than good kissing or just the pressure of extended hugging against a girl, or dancing with her. This is especially true in their late teens and early 20's.

Many guys feel a perplexing mixture of embarassment and satisfaction when it happens, and find it difficult to discuss. You probably feel some pride that you could do that to a boy - and to some extent you SHOULD, but don't think it happened either because he is uncontrollably in love with you, or because you have irresistable sexual powers over him. It's a sign of maturity that you can discuss it intelligently in this forum!

You and your B/F need to decide what your sexual standards are, and what kinds of sexual behavior (from simply holding hands to full intercourse) are appropriate to various stages of your relationship. He knows how intensely pleasurable the experience was and will almost certainly try to repeat it whenever you make out, and try to advance to greater levels of physical intimacy. To avoid disappointment, heartache and regrettable actions the two of you should decide - in the daylight, across a table, rather than in your bedroom late at night - what is acceptable and how you will help EACH OTHER stick to those promises.

(Look up some of the old "First Time" and "Virginity" threads on this forum. Some folks became sexually active at 15 or 16 and don't regret it. Many who started having sex at those ages wish they had waited. Similarly, people whose first experience was in their mid 20's, with their husband or wife, might feel it was extremely rewarding to wait or may feel they've been cheated out of years of pleasure. Believe it or not - there ARE adults around you who can help you think through these questions as they apply to the unique person who is YOU.)

There are several things you can learn from this experience. If you are comfortable with the idea you know how to keep a guy from "going too far": use your hands, mouth, or press your hip against him to give him an orgasm, and his insistence will decrease significantly. While you're at it, teach him that just because he had an orgasm doesn't mean that it's time for the kissing, hugging and general affection to end! By doing these things you'll both be learning valuable techniques for the advanced lovemaking you'll be doing as adults.

And, as somebody pointed out, when BOTH of you are ready to move on to intercourse you'll be doing both of you a favor if you bring him to orgasm before you envelope his erection with your vagina. It'll force him to spend more time getting you ready; it'll give him greater control to be gentle with you; and it'll help him last long enough to give you real pleasure.