I was in the same position than you. I had casual sex partners 'til I found my ex GF.

I was with her 17 years, she had short hair, and the same... no problem of control.

When we split, I had several sex partners... some with great hair some without it.

With the great hair girls I had the same problem. Solution? Sildenafil. I don't have problems with my erection, so I only take half pill (good enough), and usually I come quick... but in less than 2 minutes I'm hard to continue, and the second one is longer, and you can control the cum, 'cause you're fine with the first one.

It works for me... and you've strength for 3 and 4 times... it's crazy, but is not a permanent solution, it's just for special moments.