Does it sound like my boyfriend can't have children?

My boyfriend said that he had unprotected sex without birth control or even attempting to pull out and his first girlfriend never got pregnant in the 2 years they were together. He said that his next girlfriend did get pregnant but he found out she was cheating on him and that he wasn't sure if it was his child or the other man's so she ended up getting an abortion. I know the best way to know is to go to a doctor but just from that information does it sound like he can't have kids?

Does it sound like my boyfriend can't have children?
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