Oh, I meant, that you can catch cold/flu type of things with his hand washing routine. You're not going to get an STD from that.
will you get std's from mutual masturbation? no you will not.
do you need to worry about the cell phone incident? no you do not. his washing his hands after using the bathroom actually has nothing to do with your risk. you were more at risk for cold and flu germs from touching the counter at the store than you were catching anything he had on his face in this manner.
grace
What do you think could be caught by that if he didn't wash his hands?
His handwashing routine. That's the biggest risk of catching anything.
Why should I be worried about his bathroom habits?
There's a chance of catching an STD from a finger, though very small. Your biggest chance is of catching bacterial vaginosis from dirty fingers. Just pay attention to any symptoms you might have and if you're still worried, make an appt to see a dr.
As far as catching something from the phone. I don't know what kind of sores he had on his face, but, if it was bad acne, you could spread the oil to your own face. I'd be more worried about his bathroom habits.
I'm not a medical professional, so, hopefully one will be able to answer your question with statistics.