<human>: Can you condense the text into three sentences or less?

I am a 20 year old female, and I am dating a man. He is amazing, respectful, funny, handsome and intelligent. I am absolutely crazy about him, and he is crazy about me too.

I am concerned though. 

He has never been in a relationship before, never been intimate with anyone before and lives with his parents. He's a total 'ugly duckling' recently gone swan.

None of this is an issue to me. However, I am scared that if we pursue a relationship, since he has no experience, that he might want to... Venture out at some point, if that makes sense.

I have been sexually active on-off for 4 years with 8 different people, have dated all of them and been in one 2-year relationship. Do you think we could make it work long-term? I can see myself marrying him someday.

Sorry if this is silly. I also apologize if this is set up weirdly. Am on phone.
<bot>: Guy I'm dating is noob. I am bit more experienced than him. Scared we won't be able to make it work long-term.