Could a wise adult give me some advice on safe ?

You're lucky. I almost wish I had gone to boarding school now, after hearing that story. Anyway, if you think you're leading him on, you probably are. One night while you laying/cuddling with him, whisper into his ear that you are a virgin and while you really enjoy his company, you're not ready to do anything ual yet. Chances are, he's probably a virgin too and is scared to bring it up himself.