As Diego Lopes gears up for his upcoming fight against Jean Silva in the main event of UFC Noche on September 13, 2025, fans are curious not only about his performance in the Octagon but also about his life outside of it. While his fighting career continues to draw attention, fans have often expressed interest in his personal life, particularly his dating history and suspected relationships with celebrities such as Alexa Grasso and Sydney Sweeney. But is there any truth to the rumors? Well, let’s dive in to find out all about Diego Lopes’ love life.

Are Diego Lopes and Alexa Grasso dating?

Diego Lopes and Alexa Grasso’s rumored relationship has been a topic among MMA fans for quite a long time now. Speculation grew during UFC 314 media day, when Lopes and Yair Rodriguez argued verbally over claims of Mexican identity, and Grasso intervened, telling them to calm down. She posted the moment on Instagram, captioned “NOOOO! Please don’t fight,” sparking serious questions about their connection.

Jon Anik also added fuel to the fire on his podcast with Kenny Florian, saying, “I think there are some rumblings that Alexa Grasso and Diego Lopes are dating. You know, he’s one of her cornermen.” Lopes has served as Grasso’s Brazilian Jiu-Jitsu instructor and cornerman at several events, lending weight to the rumors, though neither has confirmed a romance.

So, despite appearances and fan theories, overwhelming evidence suggests that the two fighters have a professional and platonic relationship. Lopes and Grasso have been seen together at public occasions, like the opening of a UFC Gym in Mexico, but their interactions appear to be based on training, mentorship, and mutual respect within the sport.

Their professional bond is particularly strong at Lobo Gym, where Lopes supports Grasso’s development as an elite fighter. In short, the rumors about Lopes and Grasso’s relationship appear to be just that: rumors. While fans may have wanted to see a romance, the reality is much different, no matter how much it hurts for the ones in the duo. But what about Sydney Sweeney? Was it also a rumor?

The reality behind Diego Lopes and Sydney Sweeney dating rumors

In addition to claims about Grasso, several fans suspected that Diego Lopes was dating actress Sydney Sweeney. Claims that the two were romantically involved emerged on social media in June 2024. However, no credible evidence supports this claim. In fact, Sweeney was already engaged to businessman Jonathan Davino at the time, and the 30-year-old has made no public statements confirming their relationship.

This is not uncommon in the world of MMA, where fans frequently link fighters with celebrities based on rumors or internet trolling. Similar allegations have also circulated about fighters such as Charles Oliveira, who was falsely linked to Taylor Swift and Ice Spice in 2023. In Lopes’ case, the Sydney Sweeney stories appear to be a prime example of unverified fan speculation. So, does that mean he’s single right now?

Diego Lopes’ relationship status in 2025

As of 2025, Diego Lopes‘ relationship status remains unconfirmed. Neither he nor Alexa Grasso has ever confirmed dating rumors, and there are no reports of him being involved with anybody else. For now, Lopes appears to be completely committed to his fighting career and professional development in the featherweight division.

Fans will most likely continue to speculate, but unless Lopes addresses the matter, his personal life will continue to be private. But one thing that we know for sure is that the relationship with Grasso is exclusively professional, and allegations about Sweeney are untrue.