Should I have Sex?!

I am in my early 20’s and I was at a party and I told one of the guys I am a master in the bed and I told him to come over so I can show him btw he is soooooo hot and sexy and he show me his pics so I know It’s BIG and I am just scared should I have sex with this really hot guy or I just say hi let’s eat popcorn and watch TV.I am a virgin so it’s a big deal!!!!!