Masturbation
Masturbating may be done alone, but can also be done with another person. This is called "mutual masturbation". This is fairly common among pre-teen and early-teenaged boys regardless of sexual orientation. Usually, it is done out of curiosity so boys can educate themselves about whether their sexual responses are similar. Girls may also masturbate together, regardless of sexual orientation. Girls and boys who are starting a relationship, who are worried about pregnancy, or who are just curious about sex may begin with mutual masturbation. Two people can also masturbate together over the internet or with phones, although that is usually called cybersex or phone sex rather than mutual masturbation. That can be a good way for two people who are in love but are far away from each other to keep their romantic relationship alive. It can also be a way for people who have not met in person to build a relationship. Even for two people who do not plan to have a romantic relationship with each other, it can be much more fun to masturbate with someone else than to masturbate alone.