Haha, it's going nicely for both of u :)
To tell u the truth, being a guy, I don't really think its a problem when girls not being in their best appearance. In fact, seeing a girl a bit sweaty, or a lil tangled hair at times can be nice. It shows their natural beauty, not in an artificial way :))
I guess he's having some feeling toward u also ^^.
All the best 4 u :)
P/s: library is a good place in my opinion. U guys can share looks while there's no ( or pretty little ) sounds about, making these become truly nice moments, coz u can hear u heart beating much louder, hahaha :))