The Gay Counseling Institute offers therapy and counseling in Luxemburg and Barcelona.
Counseling is sometimes also possible in other locations (Paris, London,...) or via online sessions.
Dr. John Gottman and his colleagues conducted a twelve-year study of same-sex couples to learn what makes same-sex relationships succeed or fail. Research has shown that there are some qualities of strength (e.g. like humor and ability to calm down during a fight) that are especially key to same-sex couples.
Read more about this research in the Journal of Homosexuality here.