All eyes have been on Jon Hamm lately as the actor and his long-time partner, Jennifer Westfeldt, announced their split after being together for 16 years.

And now, amid speculations over her split with the actress-screenwriter, Jon Hamm is alleged to be the new boyfriend of her "Minions" co-star, Sandra Bullock.

It has been rumored that one of the issues that came between Jon Hamm and Jennifer Westfeldt was due to the "Mad Men" star's reluctance to have kids.

"I don't have a driving force to have a baby," the "Minions" actor previously said, as quoted by News.com.au. "That said, I'm in a committed relationship, and if it ever came up. I'm not ruling it out."

If rumors are true that Jon's relationship with Jennifer Westfeldt didn't work because they're allegedly not on the same page when it comes to building a family, then some speculate that the actor's purported relationship with "Minions" co-star Sandra Bullock might be headed down the drain.

"Ironically, Jon Hamm is reportedly dating Sandra Bullock - who has a son of her own," Celeb Dirty Laundry reported. "So, basically, he didn't want to have children with Jennifer Westfeldt, but he is totally okay with playing step-daddy with Sandra and her son Louis? That's cold."

"Sandra has been single for a super long time, so we couldn't be happier for her - hey, a boyfriend is a boyfriend, right? But we're a little concerned that Jon Hamm could leave her broken-hearted once again," the article continued.

Before being linked to her "Minions" co-star, it has been rumored that Sandra Bullock has been dating a photographer, who she took as a date to Jennifer Aniston's wedding to Justin Theroux.

It has also been reported that Sandra Bullock has been keeping a low profile on her love life because of her son, Louis. Apparently, the Oscar winning actress doesn't want a boyfriend to be involved in her son's life if it's not long term.