Well using the great MN phrase - he is telling you who he is, you MUST listen to him.
< twiddles knobs on Twat Translator (patent pending) >
"fair enough when your heavily pregnant I can go without because I will be supporting you then and ill know sex would be hard or difficult like it got last time but not now." If I can't have sex in the positions I like best I might as well not bother and I will condescend to wank in these, exceptional, circumstances.
"i can't commit myself into this relationship if this is how it's going to be." Lovely example of the classic skilful double of Missing the Point combined with Blatant Threat. The Missing the Point is this - if one has tried for a baby with someone then you have already committed oneself to them, and cannot then four months later pretend to still be pondering whether to commit or not. The threat is "I will end this relationship if you do not change."
It's always nice to see the old classics remastered, and three cheers for him for reminding us of those three golden oldies:
"thats not me being horrible or stubborn" no, of course not darling, you're being the BEST partner in the world, totally unselfish and totally understanding of my point of view. You're just SO cute!
"in the end it wouldn't be fair on either of us " I'm doing this for you too. See how much I think of your feelings!
"it would only have a negative effect on you and why your pregnant its not what u need" Seriously, has there ever BEEN a more considerate father-to-be than me? Is there an award you can enter me for? Is there a category in Pride of Britain? Can you find out?
Then we have
"i love you alot right now" Just right now, while I'm writing this text. I didn't love you very much when I was shagging all the other women, and I don't love you very much when you don't want to have sex with me, and I won't love you at all when I leave you but yeah right now, I love you alot, yeh
"would do anything to make it perfect" apart from be faithful, or try to understand that pregnant women's hormones sometimes make them go off sex, or stop stressing my pregnant partner by threatening to dump her.
AND FINALLY, THE MOST GLORIOUS NON-SEQUITER I THINK I HAVE EVER READ ON MN
"i don't want to cheat on you not that it's entered my head" How come you managed to type the words "I don't want to cheat on you" without the concept entering your head? Did your hands do it by themselves without aid of your brain? (I suppose it is highly possible) Or did you sit randomly at the typewriter like an infinite number of monkeys and eventually those words appeared?
God what an utter prick. Please get rid, OP. What if you limp through the rest of this pregnancy and have sex when you don't want it, then in the future get ill or something? You'd just be back to square one with this arsehole.