Guys, I think I got myself first beta orbiter and I don't know how to handle that

>he messages me every day/every two days*
>always starts our convos with talking about uni stuff
>always apologises for messaging me and 'taking my time'
>from time to time says subtly mean things about my good male friend with whom I'm very close
>is hella bent on posting on my fb wall or posts on his wall screens of our convos

He's just a guy with whom I was in the same seminar group at the uni, but it was 2 years ago. I don't want to lead him on (assuming he's into me) but I don't mind being friends

*that started out of blue 2 months ago when I left the country for student exchange thing