Obsesssive?

Going to post this anon because a couple people know me and my bf.  So, recently my boyfriend has been super clingy lately. Like he CONSTANTLY wants to hang out and just wants to be by my side 24/7. We've been together a year and a half and I guess it's always kind of been like this but I'm just noticing it more recently. Is that normal? Is it normal for him to say "I'm just not happy when I'm not with you" I'm one of those people who sits down and talks through people's problems with them so I made him break it all down for me and he realized that his life is oriented around me. Is it normal for a guy to be so attached like that? He's a perfect boyfriend regarding everything else! Extremely caring, selfless, sweet, fun, and so many other things. I love him to death and couldn't imagine my life without him, so I'm looking for some real responses on this. Thanks for your time!:)