July 27, 2021 | 10:11am

“The Bachelorette” star Andrew Spencer has apologized after offensive tweets from his past resurfaced.

Spencer — who got sent home by Katie Thurston last week and is a fan favorite to become the next “Bachelor” — called his past messages “really immature.”

“I own it and I don’t downplay anything about it,” he told “Entertainment Tonight” during the taping of the “Men Tell All” special, which aired Monday night. “I’m really sorry that people had to see that side of me.”

Reddit users recently uncovered a series of tweets penned between 2011 and 2014 that allegedly contain misogynistic, fatphobic and racially insensitive material — including one tweet that calls women “fat hoes.”

The 26-year-old pro football player told “ET” that he has changed since writing the offensive messages.

“Obviously, you don’t want to hide that. That’s a part of my life and I own it, but that’s nowhere near the person I am today,” he said. “I obviously show that every single day in how I speak. If my mom would’ve saw those tweets, she would’ve whooped my ass for sure.”

He added, “[I’m] definitely disappointed and embarrassed about that but that is 1,000 percent not who I am today.”

Andrew Spencer receives a rose from Katie Thurston on
Spencer receives a rose from Katie Thurston on “The Bachelorette.”
ABC

Despite the resurfaced tweets, much of Bachelor Nation is pushing for Spencer to become the next “Bachelor,” while others are rallying behind single dad Michael Allio, who left during Monday’s episode to go home to his young son.

“Make Andrew the next Bachelor!!!!!!!!!,” one fan recently wrote on Twitter.

“Bachelor Nation waiting to sign the petition for Andrew S to be the next Bachelor,” another person tweeted.

Even Thurston is pulling for Spencer after sending him home.

“It was no surprise that once he did get sent home, that Twitter and Bachelor Nation blew up rooting for him to become the next ‘Bachelor,’” Thurston, 30, recently said on the “Off The Vine” podcast. “I don’t know who the next ‘Bachelor’ is yet. I don’t think the show knows. He does have my vote. I am rooting for him for sure.”

She continued, “But I think it’s just such a huge statement for him to be like, ‘I will give up my dream [of football] to pursue my other dream, which is starting a family, settling down, finding my wife.’”