This all depends on if you are friends and have sex (Friends with Benefits) or if you guys are just having sex (F_ck buddies).
meterologist
meterologist
Lycanmaniac --------------------------------------------------------------------------------------------------------- Lycanophile??
You !
Party pooper?
vamp freaks
skull collector
an astro nut!
Workohalic or social
sociopath
It could be a chronophile (one who is obsessed about time).
Someone who is obsessed with themselves is commonly referred to as narcissistic or self-absorbed.