Most Helpful Guy
Ignore people telling you to break up. Christ, do people not attempt to work on their relationships at all anymore?
Understand this: you have different communication styles and different ways of expressing love. PDA doesn't express love to him... and if you get dramatic about it, he will think you're insecure.
So, find out his love style, and try to fulfill that. In turn, he should do the same... let him know you just like it and it makes you feel good. Don't be dramatic and say something stupid like "it makes me feel like you don't love me."