If you are getting married to your spouse, why are you still visiting your ex for a last sample. Then one wonders why their marriage is in trouble before their marriage even starts. Your husband or wife cannot satisfy you because you have tasted a variety of sample, you are used to variety. Then you cannot stay faithful because you can never be satisfied unless God deliver you.
Change your ways, repent and ask God for forgiveness. Your spouse should be the most beautiful woman or the most handsome man to you. If you cannot stay faithful, then do not marry