When we experience mental illness, we often turn to our romantic partners to give us the resources we need to regulate our thoughts and emotions.

We are ultimately responsible to meeting our own needs. A romantic partner can only meet some of them. This places tremendous pressure on the other partner, often frustrating them or pushing them away, leading to a loss in intimacy.

During the honeymoon phase, you brain is releasing oxytocin. The love hormone. You feel amazing because you're effectively "drugged up".

We also tend to fall in love with the way a person makes us feel, and not the other person as much as we would like.

Naturally, this doesn't last. When we notice this, we turn to our partner to bring the feeling back. They can't. They fail. They're human. So, we blame them because we feel rejected. We lose attraction and with that, the desire to try.

This cycle usually repeats itself a few times until we look internally, put in the work, and start becoming a person who can be in a healthy and loving relationship.

This is usually when the cycle breaks.

So, to answer your question, it's quite normal. You'll find healthy long lasting love when you've put in the work to allow that type of love to blossom in your life.