Many sexual partners in your youthful days is a doorway to adultery, and a plantation of "adultery in the blood". People give reasons for adultery, which may include: "he was not there for me, she is not respectful, he didn't care for me, she is not good in bed, he cheated first, she nags a lot, etc". But one of the causes of adultery is the taking in of many male private parts in the past, and the entering of many female private parts in the past. This leads to the inability to be satisfied with a partner, and the quest for variety. This is one of the causes of infidelity...

Simply lack of self_control. I know of virgins who went on a cheating spree after they were disvirgined.
The temptation to have extra_marital affairs is extremely strong, esp with the way everything sex related is now hyped. In our movies, magazines, etc.
Not yielding takes alot of strenght.