Could be a learnt response to his ex needs on sex... If been in w long term relationship.... I would probably pin the not wanting to get " fluidy" on a woman's hangups rather than the other way around. If he has been in a rut in what his ex used to allow... It might have conditioned him to stay that way, and never waver from the proscribed positions etc
I have watched some bdsm porn recently( purely research😋) and I found that I don't really find all the spitting and dribbling on a man while doing a bj, a real turn off.
That seems just too ... Wet and gross... But.. I don't mind bjs.. Or recievi g oral, or even a man Cummings over me....
I would prefer he came inside.. But that's. Cause I like deep sex...
I recognise it as a limitation for me... And I see the benefits of overcoming it.
One thing that could get you around the mindset( something I would probably do myself) is to work on a deliberate messy sex
Totally over the top, oils, cream.wine...chocolate.. Select your poison..but set the area fokink😉😂
n contact sex where it will be impossible to not get all messy😉 . have area all set to contain, deal with the results...
By making it more fun,And a harmless mess( which heightens sense of touch).. When he gets to climaxing it would almost be a " in for a penny... In for a pound" situation
Might relax him I the back of his mind that it don't matter getting stuff everywhere... And tip him over
Something of the mud wrestling scenario😁😇
If it works you might find the drier sex more fulfilling... And or a new kink😉😂
If nothing else... You would have had at least one really interesting night😅