Constantly turned on?

My boyfriend just got back from Parris Island on Friday. He went through bootcamp for 13 weeks and within that time I never tried to get off or anything because I just felt kind of guilty. While he was gone he lost 20 lbs, gained muscle in his shoulders so now he has the broad shoulder, small waist look. But his tummy is still soft (which is still very attractive to me). He has definitely filled out a bit. He is also a bit more quiet and not as antsy about everything like he used to be. But now just looking at him has me ready to go. Whereas before I thought I may have had a sexual problem because I was never really in the mood. I’m wondering if it’s the distance or maybe the maturity mixed with his new body type. (Not that the body type matters, but I still appreciate it lol). Has anybody else experienced a constant feeling of just being aroused around their significant other. We’ve already fooled around 5 times, and he’s only been home for 2 days. Which would have never happened in the past.

This was him before:

And this is him now (or two days ago):