I honestly think you went abound this relationship all wrong. Sleeping with him right off the bat isn't necessarily a bad thing, but if you want a long lasting relationship, it's always a good bet to not give it all away up front like that. It makes you seem uninterested in anything other than just having a good romp between the sheets.

Also, why buy him a gift if you aren't exclusive? Makes no sense to me.

I think you now know better for the next time you meet a guy. A little older, little wiser, eh?