My Starr is also some what like this but as he's gotten older he's become a little bit more independent. Loki sounds like he loves you very much and he sounds like such a sweetheart too.

I have 4 males and 2 females and I've found that the males tend be much more needy when it comes to needing their daily pets,belly rubs,cuddles,scritches etc. Maybe Loki would also like to have another kitten to play with and this might help him feel less lonely thoughtout the day. Most of my cats will also be greeting me at the door when I come home and this is prefectly normal. They're hungry and want to fed.