Has my boyfriend reached the 'comfortable stage' or is he bored?

[ad auxilium xo]

For a year we have been very loved up and he has never given me a reason to think he was even slightly attracted to/interested in any other girl.

Recent changes:
- Started going out more with friends
- Less motivated to do romantic things esp. for upcoming Valentines day
- More actively making friends at uni, most noticeably female friends and adding on facebook
- Still very loving when we are together, but less worried about upsetting me by doing the above or occasionally calling a girl 'fit' etc (he was very careful about this before)


Is this the 'comfortable stage' or is he bored and looking for the excitement of the chase again?

Other details:
-We are both at different universities, see eachother every 2 weeks
-He assures me that he just likes making new friends, and that he respects the line between talking and flirting