Guys - please tell me I'm being silly.

[VincenzoG91]

You're 20. This is a probably a practice relationship where you will learn some things before you meet the guy that you marry.

[MaidenMinx]

whatever you do, dont buy any animals. thats when i realised i was trapped for life. did you know that some cats can live for 20 years or more. thats a 20 year commitment.

To the cat, yes. But not necessarily to the Mrs.
My ex and I had 2 cats and he decided to hold mine hostage. I left without the cat but went back and cat napped him back as soon as I could.

OP, my now hubby refused to even consider the idea of marriage for years. Then one night he said "let's do it. As soon as we can" so it can happen. Your bf sounds like he just wants to enjoy being young and that doesn't mean he isn't committed.