I’m a therapist – these are the six things you should say to your partner to make your relationship thrive

The six phrases to reach the seventh heaven.

Amy Morin, a psychotherapist and author of “13 Things Mentally Strong Couples Don’t Do,” has discovered half a dozen phrases that are often used in healthy relationships.

“If you and your partner regularly use these phrases, it’s a sign that you’re already a mentally strong couple,” Morin told CNBC Make It. “And if you don’t yet, you can start implementing them and find that you will become stronger both individually and as a unit.”

Morin, like many psychotherapists, believes that the more you communicate, the stronger the relationship will be, because you can express your feelings, appreciation and sensitivity to each other.

Below are six phrases that successful couples use to keep their relationship strong:

1. ‘I’m going to tell you something that might be boring to hear’

Although a confession may upset your partner, the phrase shows that you have empathy, which is admirable.

“Acknowledging your faults and being honest about your needs can help you become stronger together,” Morin said.

The psychotherapist suggests uncovering thoughts such as, “I felt embarrassed when you told your mother about our private business,” to help you navigate the problem head-on versus avoiding it.

2. ‘I need your support now’

A study conducted by clinical psychologists John and Julie Gottman, who interviewed over 3,000 couples, revealed the importance of a supportive partner.

“Your mission is to allow yourself to be vulnerable — to turn offense and defense into self-discovery and openness,” the duo told CNBC Make It.

The expression “I need your support now” reveals that your partner is vulnerable and honest. Morin also thinks the phrase is essential to a healthy relationship.

3. “I never thought of things that way”

Sometimes, it doesn’t hurt to take a moment to process your loved one’s perspective because it will allow you to see things differently.

The Gottmans consider phrases like “Let’s compromise here,” “I think your point of view makes sense,” and “I’ve never thought of things that way” as “Getting to Yes” phrases.

Adding these terms to your conversations shows that your partner is actively listening.

4. ‘It’s understandable that you feel this way’

Even if you don’t agree with your girlfriend’s point of view, it’s good to remind her that you accept her feelings by saying, “It’s understandable that you feel this way,” Morin said.

Healthy couples, the psychotherapist says, often try to put themselves in each other’s shoes, even if they ultimately see things differently.

5. ‘I’m sorry for the part I played in this’

An important part of a successful relationship is taking ownership of your wrongdoings; it shows maturity and growth.

“When you take responsibility for your part, you increase the chances that your partner will accept responsibility for theirs as well,” Morin said. “Then you can both put your energy into developing a solution, rather than getting stuck pointing fingers and arguing about who caused the problem.”

6. ‘Let’s find a solution’

Couples who work together to resolve an issue show their strength and trust in each other to seek a solution.

“While some problems are ultimately in your partner’s hands, like a problem they have with their boss, offering to work together shows you’re invested in helping them make the best decision for themselves theirs,” Morin said.