How to politely ask my potential groom about his character and lifestyle?

Brothers, I need your help to navigate a delicate situation in my life. Please help 🙏

I am 25F. My parents introduced me to a guy. He is very good on paper ( great career, business class family, Ivy league education wagera wagera).

But I need to know if he is V or not because I am very scared of STDs and many men emotionally remain stuck with their first GF. I saw plenty of YouTube videos on that. So I need to make sure this guy has no drama.

I am not shaming anyone. Everyone has a right to live their own life. But I don’t want to marry someone who did casual stuff in past. If I have to build a family with a man and grow old with him, then his character should be my first priority. I am sure you guys understand my point of view here.

How to ask this respectfully?

The main issue is, this guy is important for my dad. My dad is making a good investment in his company. His family send us this marriage proposal. He already said yes to me.

My dad said it’s upto me to say yes or no but don’t do anything silly in front of him because you may have to work with him in future, if this deal go through.

So I need to ask this question which is a very private matter but have to make sure it doesn’t should vulgar.

Please advise.