Trying not getting jealous of his 'man time'?

my boyfriend and i have been in a long distance relationship for most of our relationship. we've been together 7 month and have only had about 6 or so weeks of actual face to face time. we try to skype or communicate in some way everyday. i prefer skype. but even when we do it's never really enough. usually an hour or less. it's frustrating to say the least. now while i don't expect for my bf to spend every free moment he has doting and talking to me, i ca't help but get a little jealous of the time he spends with his friends or doing his own thing instead of being or talking with me. it's a little silly when you hear it but idk. when you're always with someone it's not that big of a deal but when your time "together" amasses maybe 6 or 7 hours a week things get tough. i know he needs his free time as i do mine. but it hard when we spend so much time apart. any advice or comments?