I've been there mate, twice
I guess it depends on a couple of things like how big is your collection and the value of it. If The collection is only worth £300- £400 then surely that can't be an issue with any one you go out with and the other point in my experience is that they will put up with what you already have when you meet them but if you continue to spend while you are going out, then this can be a problem
Ideally you both should be into the same things but it doesn't always work out like that. When the two girls that it didn't work out with first saw my collection, at first they were stunned and I have a huge amount (about £12000 worth

) but when you tell them how much it's worth their eyes light up and they immediately start thinking of what they could do with all that money. Nice holidays, nice car etc, but they don't appreciate its your cash they will be spending and chances are that if you did sell for that reason, once the money's been spent they would leave anyway :evil:
That said, I have tried to see things from a woman's perspective and have wondered what it would be like if it was the other way around? I went out with someone once who collected dolls house stuff and it wasn't vintage it was just the stuff you can buy today. It was horrible, dolls in period costumes with frilly dresses and the houses etc. I tried to look for some reasoning but to me it was just crap and there is no way I would want that on display in my house and none of it was worth anything or was likely to become worth anything in the future.
So I guess the girls you are serious about have to either like starwars or appreciate its value and realise the investment being made. I've always said that I would only part with my collection if the money raised would be put toward a deposit on a house or to pay for my kids university fees if or when I have kids. Otherwise it stays put.
It's not nice when a relationship ends whatever the reason but you should never be made to feel guilty for having an interest in something and I'm sure there are people out there who spend there time and money on far worse things.