Aint no way he’s that upset about having to hold back from the nipples for a bit 😭

No. Ueda isn't that petty. I think he was more upset about Aki's language. Treating himself like a hole to be used. Ueda is genuinely in love and doesn't think Aki views their lovemaking as connecting with your partner.

Oh no I know! It’s just that his abrupt behavior made it seem that way to Aki lol I’m sure that in the next chapter he’ll explain his real reason