Wouldn't she be more satisfied by a bigger cock?

A week or so ago I was a bit premature with my current gf(lived together 10 months) and told her I'm sorry that's never been a problem for me before. She said "well maybe you just can't handle me" then quickly reassured me she was joking. It was a turn on.

She jokes sometimes about making me take pictures of her for let's say, exotic content.

The first time she did that I gave a little push back as she doesn't know about this kink, but I didn't try to seem entirely closed off to the idea. Then we got to talking about how some people get personal and want things like panties sent to them for money and she said "I don't know if I could do that." Which sounds like she's disqualifying that behavior but in turn also admitting she would actually be open to posting her nudes online for $$$.

Recently she made a joke and said you "your little bitch ass" at the end of it, she's never used terms like that or demasculated me until now.

Then there was a muscular dude from survivor she had a crush on, Jon from one of the newer seasons.

She also got very noticeably flustered when watching Straight Outta Compton and there was a nude guy on screen.

I was talking about how this guy online making physical threats seemed immature and she said "have you seen his profile picture? You and him ARE NOT the same person. Then I checked his profile and it was a dude who looked roided out like tree trunk arms, biceps bigger than most people's head. Didn't think she was into that, but she sounded turned on, almost like she didn't even realize how it sounded.

Recently I was trying to fuck her from behind laying down sideways and she put her leg up in the air and arched back, clearly wanting to be fucked like that but she is just so thicc and curvy my cock couldn't reach in that position, any average or less guy couldn't.

Then she was riding me again and I tried to reposition her to get deeper and she said "that's not the problem." Meaning the way she was riding wasn't the issue. The size was the problem. A bigger cock would unleash her to ride the primal way she wants to.

About a week ago when giving me handjobs she sometimes flips her hand and strokes me with just one finger and her thumb. I feel like she HAS to know that makes me feel small in her hand, but she's also probably noticed it makes me cum rly fast.

Just yesterday, I brought up how much a streamer we used to watch has made on nsfw social media and she lifted her shirt to reveal her beautiful natural 38DDD breasts, reminding me how much she could make if I let her.

Her waist is small but her hips and ass make her need XL leggings etc. I don't stand a chance of doing much in doggy or cowgirl and sexually she is the type of girl that would want to be prone boned...if I had the dick for it.

We haven't been fuckijg the past couple weeks and when we do she never cums or rly even moans

Should I accept I'm a cuck, give in and ask her to try bigger dick? I want her to be satisfied.

I've never told anyone about this kink, and I'm not entirely sure it's something I could go through with in real life. However, these things seem like babysteps in that direction to me.