My fiancé would rather sext me than actually have sex with me?

My fiancé complains DAILY that I don’t suck his dick or have sex with him enough. I agree that I don’t but it’s only because we have a 4month old who i cosleep with and take care of 100% by myself, so at the end of the day when the baby finally falls asleep, I’m exhausted and I have zero energy to do anything other than eat some food and go to sleep. Well anyways on the rare occasion (probably once every week or two) when I do have the energy he makes it SO hard to even do anything. Like tonight he says he needs to shower cause he didn’t today and i say be quick he says he’ll be out in 30. He’s sexting me the whole time. I go into the bathroom 30 mins later since he’s still not out and he’s jacking off looking at shit to send me, and I’m like just show me in here but he wants me to go back to the room and keep texting, like I don’t want to fucking text, it does nothing for me. He could of talked to me in person or asked me to get in the shower with him or anything. Then he says never mind and is just arguing with me since “I made it weird by saying he was acting weird”. I don’t understand why he couldn’t of just got in the shower got out and interacted with me in person. It’s not like there’s going to be another opportunity soon.

Anyways I’m just irritated and needed to type out my thoughts. 🤦🏻‍♀️