In The Secret Life of the American Teenager, Amy Juergens's boyfriend is Ben Boykewich.
Ben is played by Kenny Baumann and is introduced as Amy's classmate and high-school boyfriend. He is the son of Leo Boykewich, a wealthy businessman, and becomes an important part of Amy's story after learning that she is pregnant with Ricky Underwood's child.
Ben proposes marriage to Amy because he believes he can help raise the baby and provide stability. The pair even attempt to marry using fake identification, but the marriage is invalid because both are minors. Their relationship later becomes strained as Amy adjusts to motherhood and remains connected to Ricky, the baby's father.
The name can be confusing because Ricky is also central to Amy's romantic storyline. Ricky is John's biological father and eventually becomes Amy's long-term partner, but Ben is the boyfriend the question asks about, particularly in the show's early seasons. Ben's full name is Benjamin Boykewich.