Rob Kardashian admits he "embarrassed myself and my family" during Instagram rants against fiancée Blac Chyna over the weekend

Rob Kardashian is making amends.

After the Rob & Chyna star had a social media meltdown over the weekend that led his fiancée Blac Chyna to pack up, take 5-week-old daughter Dream and move out of the couple’s shared home, the star says he’s “seeking help” for emotional baggage that has haunted him through his tumultuous relationship with Chyna, 28.

“This weekend I was in an emotional bad place and did some things that embarrassed myself and my family,” Kardashian, 29, wrote in an Instagram post on Monday. “I apologize and I’m seeking help to deal with my flaws/issues. Please pray for me and I’m sorry @blacchyna. You are a great mother to our child and I love you.”

He posted a second tribute to his baby girl: “I am going to get better for you Dream. You are my life and gave me a new start on being a better me. Love you.”

Less than an hour after Kardashian’s post, Chyna apparently accepted his mea culpa, regramming his first post with a simple heart emoji next to Kardashian’s Instagram handle.

Kardashian and Chyna first hinted at their whirlwind romance in late January, got engaged in April and welcomed Dream in November. In less than a year, they’ve seen several highs and lows including this weekend’s hack of Chyna’s personal messages, which she alleged Kardashian might have been behind.

A source told PEOPLE over the weekend that one persistent problem in the relationship is that Kardashian’s “emotional problems take over and he lashes out at Chyna over ridiculous stuff.”

The source added, “Rob is a dad and that should be his focus … but he isn’t mature enough to not start fights with Chyna in the first place. It’s just a crazy mess. A very sad crazy mess.”

Chyna’s mother, Tokyo Toni, told a different story on social media Sunday.

“They will be fine,” she wrote. “I love Rob and I am going to try to help them manage their relationship through love and wise words. At the end of the day they will still be together I promise you. Rob just have to get Mr. Insecure off of his back! Everything will be fine.”