In previous relationships I'd always fancied doing it but it wasn't an option. Soon after starting a relationship with my now fiance she was licking my balls whilst I was wanking my cock and she just dove down lower and started rimming me, god it felt amazing. Soon afterwards I cam buckets
Since then we do it to each other from time to time, not always but if we're feeling particularly adventurous, or she just wants to get me off quickly
SHe had done it with several other boyfriends before and obviously they, and she'd enjoyed it.
It was a bit of a surprise at first, and I sometimes feel a little bit funny about having it done to me but it is very hot, the feelings are amazing. Normally I'll be lying on my back rubbing my cock whilst she's licking me, looking up and enjoying the show.
Occasionally I'll be on all fours, this always makes me feel particularly exposed and sort of kinky.
As long as she's clean I enjoy doing it for her, sometimes it leads onto anal sex and sometimes not