I am a female, 23 years old and i have a boyfriend younger than me, he is 19 . We are together for few months.
We did not have normal intercourse yet because of the following reasons : I love to suck his penis and make him cum and i also love to masturbate him and make him cum in my hand and feels his fresh sperms. But when i just start sucking him, his penis keeps dripping a lot of transparent and sticky liquid ( not like the sperms he ejaculates with climax). and as i continue sucking he keeps dripping more and more even if he is far from his climax. Also when i want to masturbate him, the same thing happens and my hand becomes full of that liquid. He may not stop that dripping for 30 minutes untill i do it faster and let him get the climax and ejaculates his thick sperms.

I will not have intercourse with him untill i have answers to the following questions.
What is that liquid ? is that a normal thing for a man to keep that flow of that liquid ? Does that means he does not control himself (although he does not cum early) ?

Please help me with your experience.
Thanks.