The Bible always refers to angels in the masculine sense--not as boys...but as men. We see this in Genesis, when two angels visited Lot in Sodom before destroying it.

The two angels arrived at Sodom in the evening, and Lot was sitting in the gateway of the city. When he saw them, he got up to meet them and bowed down with his face to the ground. . .Before they had gone to bed, all the men from every part of the city of Sodom—both young and old—surrounded the house. They called to Lot, “Where are the men who came to you tonight? Bring them out to us so that we can have sex with them.” Genesis 19:1, 4-5

The men in this town clearly knew these visitors were men. The only two named angels in the Bible are Gabriel and Michael, both men’s names today.

Angels are not little children with tiny wings, but always described as strong and mighty warriors. In fact, every time an angel shows up to someone he says “Don’t be afraid.” Who would be scared of an infant with wings and why would God make angels, His warriors, in the figure of infant boys? Wouldn’t it make sense to create them with a sense of authority?

Angels are never presented as women either, which also shows that there aren't different genders in heaven.  If there were, that would mean angels repopulate and marry.  Jesus made it clear that doesn't happen in heaven.

The Bible only presents angels as men.