Ignoring Future State it seems like DC is trying to fix things, somewhat, so hopefully that sticks in some form .
They also both love science and tend to apply that to their hero work, and both tend to miss dates because they're too busy being heroes...Well, they're both are so paranoid about keeping their secret identities that they hardly ever tell someone else they're secretly heroes, to the point a lot of people who know about it had to find out, 'cause they don't like telling lol.
Peter is not as bad as Barry though, he at least revealed to Felicia, and I think Barry never wanted to reveal to Iris.
So yeah, there's that at least.