Hi guys I need helpful advice on this.   

two examples:  when me, my roommate, and his girlfriend go out to dinner.  his girlfriend usually comes wearing something which reveals a moderate amount of her chest, but nothing you would consider inappropriate for casual setting.  

During dinner, I found it difficult to maintain a friendly appearance with her.   While she was talking to me,  often I couldn't look towards her for longer than about 10 seconds before I must look away.  

 This is because of my annoying disobedient eyes.  I know what they want to look at, but I don't permit that.    My dedication to controlling myself is not the problem.   My eyes will only be obedient for about 10 seconds.  When they start to fail me, I must look away. 

It caused me to appear rude and uninterested in her conversations, and I feel awful about it.   I don't wish to be rude, but what she doesn't know is that I'm doing it out of respect. 

example two:  yesterday at Smith's, I was trying to purchase ibuprofen for my covid-19 vaccine symptoms.  The kind lady stocking over the counter stuff was very helpful to me.  She was taking time out of her day to help me pick the right medication.   

She had a moderate amount of her chest showing which you wouldn't consider unprofessional for entry level work.   I was very thankful for her help, but again efforts to control my eyes started to strain after 10 seconds.  often I needed to look away from her when she was talking to me, and accidentally gave off the appearance of being rude.

I feel awful about this.  she didn't know I was trying to be respectful.   this problem occurs in my life almost every week. if you have any advice, please,  I would appreciate it!