Yes, traditional Buddhist beliefs are quite sexist (many sects believe women must get reincarnated as men before they're able to achieve liberation), and uphold traditional views of marriage.
Edit - have to add though, that Buddhists are generally very tolerant of those of opposing beliefs, and still preach compassion and love above all else.
More misdirection from mikeb85. While it is true that different Buddhism sects had and have various views(including discriminatory) in relation to homosexuality, it is intellectually dishonest to avoid mentioning that Dalai Lama (a most prominent Buddhist spiritual leader) supports gay marriage.
The Dalai Lama is the leader of a single sect (Gelugpa) of a single religion (Vajrayana). There is also Chan, Zen, Pure Land, Mahayana and Theravada Buddhism. The Dalai Lama is hardly representative of all Buddhism...
I think you're confusing culture with religion. (A similar example is female genital mutilation, which is a cultural phenomenon and not a Muslim teaching. IANATheologist.)
Edit - have to add though, that Buddhists are generally very tolerant of those of opposing beliefs, and still preach compassion and love above all else.