I will have been invcel (involuntarily celibate) for three years in August. I've been chaste since Decenber 2000. (Yes. There's an odd overlap.)
That is true, to a point. So are you saying that if there was a willing member of the other sex, you'd jump on it just because it's there? then you prove that you don't have self-control.
I had been chaste my whole life until after my engagement. However, when Dr. Jekyll turned into Ms. Hyde, I was glad to get out of there before the wedding with my skin intact. (Literally..!)
It was easy for me to be chaste, however, because apparently I am not an attractive man. So, I would consider a woman's willingness to have sex with me a great compliment. Those who have had a great deal of success (even in just asking the time) from the other sex will not understand that. Heck, I'm darn near ecstatic when one of my women friends acknowledges my existence...
Believe me, I know that it's slim pickings. There are an awful lot of truly messed up women out there, an awful lot who say they want a good man, but won't take him when they have him. Same way for women. Real men are few and far between.
I know now that women are not necessarily good people. *laugh* The first thing I'd probably think, once She (whoever She is) makes her interest clear, is "What is she trying to get out of me?"
In direct answer to your question, it depends. If (by some miracle) we had formed a romantic relationship with long-term prospects, then the temptation would be much greater to have sex were it offered. If, OTOH, there were no such future, it'd be a lot easier to just go home instead.
Look, bud, it ain't about physical attractiveness all so much. I'm no stud muffin, let me tell you, but I have been paired with hotty after hotty most of my life. It's about who you are inside. Can you express yourself well? Do you have a willingness to spend quality companionship time with your mate, and are your activities engaging? And,(in the category of lessons recently learned) do you think of your partners well-being a lot? Can you be honest even about the petty shit?
Physical attractiveness is a factor that lasts about 4 months, I have observed. After that, no matter how amazing they look or how ugly they might be, they become -- simply -- Sue, or Jane, or Mary.
Same goes the other way. Your attractiveness won't matter in the long haul. Keep your head up high, and if you feel you are valuable, value yourself.