It makes no difference. It is for my own interest. [Although it's not necessarily true that it doesn't make a difference, Thor is trying to be honest. Context will shed some light on the situation, but he's honestly curious too. He hadn't thought of Steve as the sort for this sort of romance, let alone two of these sorts of romance. At once.]

It's not wrong to feel slighted if your expectations were not met, but it is not wrong to disregard expectations if you had no idea they existed. [He's trying not to play too heavily into Loki's self-victimization, he's just trying to rationalise. Odd, for him.]

I must admit, I'd not thought Rogers the sort of man you'd need to request exclusivity from.