if you don't go I don't go

My boyfriend and I have been together for years now and we live together. Well over time he has developed this thing to where if I don't go with him he doesn't want to go. I enjoy my time alone just like any other person. But my boyfriend. He won't even go hang out with his friends unless I go with him. So little as going to the store. I get that I'm his best friend and his mine and forever will be. But I haven't been able to have one girls night in 3 years..I still have my friends come over to our house to hang out but as soon as he gets home he only wants it to be him and I to where he has asked my friends if they could leave. He doesn't tell me where I can go or anything just so long as he can go or it's a no go because i know he gets lonely. I would like for him to have guys night but every time I have brought it up he gets butt hurt at the fact that he just wants to be with me just him and I whenever possible and trust me our work schedules are perfect with each other's so it's not like we have little time together for Christ sakes we live together. If I go into a different room and I just get occupied I then hear his heavy foot steps and not <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> 4 seconds letting a head popping with a lonely voice "where diiiid you gooooo"  does anyone else have this problem? I wouldn't say it's a problem but I really would like him to be okay with me having a girls night or him being able to hang out with his friends. His friends are always telling me that "I took him away" 
ALSO during work hours he always is texting me and calling on our breaks it's like he cannot be away from me.