Your internal conflict can spill outwards and create relationship problems. A fine example is not feeling worthy of true love but wanting to be accepted. Feeling unloved can lead people to doubt in their partner’s love towards them. Like trying to validate what is there or they are unable to accept or feel the love that their partner shows because of some unknown subconscious issues.
Basically anything their partner says or does that confirms this unfounded belief will hit them to the core and rekindle past memories that may be the main cause. Often resulting in the conclusion that their partner does not love them. It then feels totally true to them because it triggers that belief internally of being unlovable. This may not necessarily be with a previous partner. It could go back to when they were a child and witnessed disaster in their parents relationship or they were not loved like in most families.
Sadly there is a belief that if they get out of an bad relationship that they will be happy. Then later they find themselves in the same situation with someone else. This adds to their train of thought that no one cares or loves them enough or even prevents them from being with anyone again. Fact is, you cant run away from yourself and you need to see that you could be the problem. No one likes to see themselves as the issue but if more people checked themselves, less fighting will occur. With all that in mind, remember, finding a soul mate is already hard itself.
If you examine your self defeating beliefs that are blocking your happiness things could change dramatically. Talk about the problem with your partner or get professional help even. Change your beliefs and change those that are not serving you then your relationships will begin to heal.
Bar Advice. Your partner will see a new beginning in your changed approach in the relationship and even they will change and you will see things in a different prospective in your life.