If you mean to say "goodlooking" about a man (handsome man), you can say "красивый", "симпатичный", or "привлекательный". However, I think we don't usually say "красивый" when addressing to a guy if we're just getting to know him and don't mean to say that he is beautiful like a god or a photo model ;) So it is better to use "симпатичный" or "привлекательный" in a phrase like "you are very handsome" ---"ты очень симпатичный".