This is a great question actually and, no I don't think it's beta or retarded. It's human. Brother of course you want validation. You're girl should be cheering you on and talking you up!

Now I take this personally because I just broke up with my last girlfriend of several years for this very same issue. If she can't meet you in in enthusiasm and build you up, unfortunately that's a mismatch my brother.

Now I'm going to deliver the brutal truth: As far as "getting" her to validate you, it's not happening. If she doesn't have that desire then the relationship isn't functioning.

Now please take this with a grain of salt. Before you make this about her, take a look at your actions, are you putting fourth the effort to have fun with her? Is your life stable?

There's usually two sides to a story. This sounds like an impasse, but it's worth reflecting on. You deserve more than someone that doesn't fulfill that need.

Stay strong!