Help from fluent Korean please

[Agobyen]

Im (M) currently seeing this guy in my country who is a Korean national (foreigner). I only know a few JP and KR words and phrases from watching too much anime and then kdrama and kpop. He finds it cute when i answer his questions in Korean language.
When we were intimate one time, while he was fucking me, i wanted to ask if he could cum inside so i said “Hyung, Juseyo” (please give me) and he laughed and i laughed too but he still did the deed anyway. Did i use that word right or should it be “Jebal” (please) ?
Can anyone fluent in KR also give me some random words and phrases that are cool to know for certain circumstances in dating or in bed?

 

[88olny2nd]

Sa-rang-hae(사랑해) means i love u
E-ppu-da(이쁘다) means looks good

Umm please give some examples u want to know

 

[Agobyen]

Umm please give some examples u want to know

Isnt “Yeppuda”, meaning beautiful, for women?
We are both men so i have been using “Jalsaengyeosso” for handsome.

Small phrases in bed sex like my original question, “Please cum in me”
“This feels good / That feels good”
“Can i suck you / Can you suck me? “
“Please fuck me now” (to say enough of foreplay)
“ Im gonna cum soon / Im cumming now”

Also what is the korean slang used for “cum”
Anything else i could use, i’ll just parrot the words and he finds it adorable that i try.

 

[dpgpt1]

Isnt “Yeppuda”, meaning beautiful, for women?
We are both men so i have been using “Jalsaengyeosso” for handsome.

Small phrases in bed sex like my original question, “Please cum in me”
“This feels good / That feels good”
“Can i suck you / Can you suck me? “
“Please fuck me now” (to say enough of foreplay)
“ Im gonna cum soon / Im cumming now”

Also what is the korean slang used for “cum”
Anything else i could use, i’ll just parrot the words and he finds it adorable that i try.

안에 싸줘
좋아
빨아도 돼?/빨아줘
박아줘

cum in verb is 싸다
cum like milk is nothing special i think

 

[Agobyen]

안에 싸줘
좋아
빨아도 돼?/빨아줘
박아줘

cum in verb is 싸다
cum like milk is nothing special i think

Thanks, can you help with the romanization sound in letters so i can try and memorize these?