Yes. The Bible really says that homosexuality is a sin.
The Bible also says that liars will have their place in the lake of fire. See, lying is also a sin. So is stealing, so is lusting (adultery of the heart) and hatred (murder of the heart) and taking God’s name in vain, and not putting God first (Love the LORD your GOD with all your heart, mind, soul and strength) and not loving our neighbor (“and the second is like unto it Love your neighbor as yourself”).
All of these, any of these, even ONE of these can send any of us to hell.
So, if someone is a homosexual they are sinners just like every other human being on the face of the planet. We all must confess our sins to GOD and believe on Jesus to have everlasting life.