The worst thing you can do is try to spend all your free time together.
Have nights where you just see your mates and chill.
It's important for both of you to have your own friends now and in the future.
My husband and I are together since 1990, he still goes out with his mates and so do I.
If we had to spend every night together we wouldn't have made it this far
I need the company of my girlfriends and he needs his football and his lads and a few pints in the local ~ where's the harm in that
Just ease up a little, relax and it'll be cool. You get all clingy and whiney and you'll have her running for the hills.
Be busy some nights don't always make yourself available ~ it pays off you know