I see myself in you, what do i do?

I've been going out with this girl for a few months now. She's a nice, sweet person, but also a bit clingy. She's pretty much everything that I use to be, pretty much marriage material. It started from me being the gentleman which I still am, but after dealing with a letdown from a female I knew for two years, I declared to hang up those reigns & be careful & just date. She can pretty much tell me everything she likes about me, but I can't with her. I feel pressured when asked & am not ready, neither am I ready to hurt feelings. What is there to do?