V1922-I am sorry that you are experiencing this pain. The man you were dating was/is not a practicing JW. They are not to date people who are not fellow JW's, and certainly not have sex with them before marriage. He may be a serial dater of non-JW women, knowing that they will 'put out'. Where a practicing, real JW woman wouldn't unless she got carried away in the moment and then would feel tremendous guilt and turn herself in to be judged by the elders in the congregation. She would be facing possible disfellowshipping which would result in total shunning. By all standards, if your boyfriend was a practicing JW he should be disfellowshipped.
If you want to get even with him for being a selfish cad, report him to the elders in his local congregation. That should strike fear into his shallow heart.