I do this with my girlfriend sometimes. Not sure how it started, but once in a while now one of us says "hey, wanna touch eyes?" and then we touch eyes. It's actually not easy, you have to find the right angles.
While this is true, I was still grossed out when my wife used to repeatedly borrow my toothbrush... Like yeah, we'd kiss and exchange many more bodily fluids, but it's not like we're scraping each other's teeth and digging between gums and teeth when we're kissing...
Fortunately I've been to a cardiologist recently and found my heart is fine. Still don't know what was wrong with me for several months, but it wasn't that.
My roommate is always complaining about his contacts drying or running out of new ones, and every time I cringe a little bit because I hate things touching my eyes. Even eye exams freak me out, but I only have to deal with weird things happening to my eyes when I get them. I’ve been trying to convert him back to glasses, but he won’t listen.