I am a huge fan of straight ballbusting. To have an attractive woman taunt your pain, to cause and/or laugh at your aching nuts is a huge turn on. 

This makes chastity and cuckolding really sexy to, if the woman knows she is causing you aching blue balls and denial, it gives her power and makes you submissive, I find that sexy.

If you have any ideas for captions combining ballbusting and cuckold or combinine cuckold and chastity please send them my way as I am trying to make a lot of captions for my galleries

On a personal note Whilst I love all three mention fetishes, I think Cuckold should be fantasy only, acting it out might be damaging

I like the idea of a woman cheating with the man that hurt the cuckold balls, like playng dirty in tennis then fucking sleeping with your wife