Ummm, no offense, sistah I can see where you are coming from. But I have always been of the opinion that if my man (and I am talking HUSBAND - well he is and ex now..but you get what I am saying) feels the need to be with another, SHE CAN HAVE HIM BECAUSE HE IS BENEATH ME. PERIOD.
I am completely secure. It is nearly impossible for a female to have intercourse with a male unless he consents. I know what I am all about and if it not enough for one man, then CYA - HE CAN'T HAVE THIS.
There is no need to EVER get in the way of a girl trying to put the moves on your man. HE KNOWS THAT HE IS WITH YOU....if he disrespects you then show him to the door.
About the question now.
I know that I may seem a bit jaded, but I believe that true love has NOTHING to do with chemistry. People get married FOR SEX - NOT LOVE. It is my belief that love is what children teach you....and what you have learned over the course of MANY YEARS with one person. I am not talking "We have been through stuff". I am talking you are no longer able to walk upright from the passage of time and you are still the most beautiful vision that he has laid his eyes on, he still treats you with kindness and respect and you still search for his wrinkled care-worn hand while walking next to him.......THAT IS LOVE.
...kust my humble .02