Slip130:
I did say in my original comment that I recognized her stance on it and absolutely respect it, let's be clear about that please.
Anyways, she knows I'm really attracted to her physically too not just personally... and she knows I touch her all over when we're romantic, which is something I've asked about to make sure it doesn't make her feel uncomfortable when I grab her belly, rolls etc etc which she said is totally fine and again seems to like it.
But I haven't outright stated that I like fat to her at this point in the relationship.
You misunderstand.
She doesn't know about your kinks. There's a common complaint amongst plus-sized women that many of the guys who find them attractive are fat fetishists. There are horror stories for days, and I am willing to bet she has either heard or experienced creepy feeders.
I'm not saying that you are trying to be creepy, but you are engaging in your kink with her in a way that will color these events in her mind once she finds out.
By all means, feel free to sus out her opinion on your kinks before you tell her. But you have to keep in mind that her feelings on her body will not match yours and cannot match yours unless she is open to exploring your kink with you.
Focus on what makes her feel seen, loved, and beautiful. Keep your communication open and honest. Be a safe space for her. When you guys are ready, you can have the kink talk. But remember that it's only been 4 months.