"You're Just Getting Boring."

So, a couple of days ago my friend's boyfriend was at the pool with our friend group. He was part of the friend group before they started dating, but my friend wasn't there because she couldn't make it that day. We were just hanging out and splashing around with some of our friends when her boyfriend (let's call him Jacob) told us that he's planning to break up with my close friend (let's call her Addi). We all asked why, because their relationship was so strong and they were both great people who seemed to love each other very much. They've been together for about 10 months.

Jacob responded, "Oh, the relationship is just getting a little bit boring." He said it like it was an easy thing, and that he didn't care about her at all. Jacob loved Addi so so much and they seemed like a couple that would never break up. But Jacob is a little insensitive and careless about other's feelings and the effect that his actions might have on people, making it hard to communicate sometimes. He is usually a fast-paced silly guy, and doesn't like to have a lot of serious conversation unless he initiates it.

It's summer, so they don't get to see each other every day because they don't live together. I know that they're together often, but he just said that he felt that she was kind of sluggish. He is planning to end things with her in August when school starts again. We tried to change his mind because this would truly break Addi's heart, and she would be so sad, while he seemed like it was another old Tuesday. He kind of shrugged it off and continued like he said nothing.

He told us not to tell her or hint at it because he wanted to break the news in August, and there was nothing that could change his mind.

Addi loved him so much as a person and they were the perfect match. I know that I cannot see what is going on under the surface of the relationship, but he was laughing as he said it, like her feelings suddenly meant nothing to him.

My question is, how does a relationship suddenly get boring, and how would you try to fix it if you were in that situation? They were together for so long, how do you re-spice up something like that? He was probably a red flag relationship wise, because he's made some questionable decisions like this before, but I know it will hurt her deeply, and it seems as if he's doing it for fun. (He said, "I kinda wanna see how she'll react, too!" Like he didn't know that she would break.)