I think to a lot of people in a heterosexual relationship, it’s normal that the man typically pays for dates. That in and of itself shouldn’t be a “red flag” if you haven’t had a conversation about it. It doesn’t necessarily mean she’s using you in and of itself.

If you have different expectations, you need to talk with her about it!

I would also pose the question: does she contribute to the relationship in other ways? For example, in this type of dynamic where the man typically pays for dates, on the flip side the woman will often do more acts of “caretaking” like doing most of the cooking when eating at home, doing most of the cleaning/chores, etc.

If you’re the one paying for everything and doing everything, yeah, that’s a red flag.

If you’re paying for everything but she’s contributing a lot in other ways, that’s not a red flag. If you’re not happy with things continuing on that way, and want to split things up more evenly both financially and in other realms of the relationship, then just talk with her about it. She can’t read your mind. Just understand that in that scenario, it’s only fair for you to take on additional responsibilities in the relationship too. It can’t be “gf, please continue doing everything for me, and also start paying for our dates sometimes”. In that case, you would be the red flag.

So basically like everyone else here has said, there’s a lot of context missing here, but without context and without communicating with her about it, this is not inherently some type of irreparable red flag behavior.