Should I date another Polish girl? The maturity of the relationship issues.

I'm a 30 year old English guy.
I've dated a few Polish girls in the last few years, we always seem to get so far then the relationship fizzles out mainly on her side.

I find Polish girls very attractive and cute but the maturity of the relationship going forward doesn't seem to be there.
Some of the girls English wasn't very good, although this didn't bother me as we still could communicate and had a good laugh together.

I suppose the question is this: Am I just a "fill the gap before they meet another Polish guy?" Or have I just been unlucky and not found a girl after a serious relationship?

The nationality of the person makes no difference in my view. The question is are you ready for another relationship if so then yes, but why only look for a Polish person?

I agree, I shouldn't limit myself to Polish girls but I do fall for them quite easily. The bars where I live are full of Polish girls. I enjoy chatting to them and find they like to be talked to, which is why I've been dating Polish girls recently.