Paul's relationship with Tilda

I thought both of them were very attractive, but it seemed like she was much older than him, and he was extremely attractive, and for men to date a much older woman at that age is uncommon (early 30's guy & late 40's woman.

I'm not being sexist (I'm a woman too) I'm just saying...

But then add to that, the fact that their relationship seemed bound up w/ caretaking roles:

She's supporting him w/ her massively successful career, while he was taking care of her by waiting on her hand-and-foot (he puts her pills in her mouth when she needs them, etc),

That whole dynamic threw me for more than one reason.

Anyone else?