You want to know whether it’s “normal” that a guy in his 30s is interested in a 22-year-old woman? Seriously? Hell, yes, it’s normal! Pretty much every hetero guy, regardless of his age, is interested in a 22-year-old woman. What he’s interested in doing with her varies, for sure. Most would like to screw her. A few might like to go on a few dates and have a casual relationship. And some might be interested in a genuine, committed relationship. My hunch is that your former teacher definitely wants to bump nasties, and could possibly even see himself dating someone like you, but feels conflicted because not only is he your former teacher, he’s much older than you and knows the power dynamic in your relationship would be greatly skewed to his advantage.
A guy without much integrity would use that advantage to his favor and jump on you. But if he has even an ounce of integrity, he is questioning his friendship with you and trying to talk himself out of “doing anything.” That’s what he’s doing when he tells you that you’ll make some guy a great girlfriend, and that he’d like to set you up with his friend. He’s doing what he can to create some sort of barrier to keep you safe from him, while pulling you close and snuggling with you on the couch. Did I mention that he’s conflicted?
Honestly, if I were you, I’d MOA. Unless you’re a super mature, experienced, wise 22-year-old, the age difference in this circumstance is too great. And since you asked in all sincerity whether it was normal for a guy in his 30s to be interested in a 22-year-old, I’m going to say that you probably aren’t wise enough yet to date a man that age. You’ll get hurt if you do. Trust me. I mean, there’s no guarantee that you won’t get hurt dating someone else, but the playing field would be much more even if you stuck with guys your own age.