A lack of sexual desire is a common complaint. In relationships it’s perfectly normal if one partner wants to make love and the other one doesn’t. People normally solve this problem by compromising somewhat. But if someone seldom or never has any desire for sex this can put pressure on the relationship. This is an extraordinary frequent problem in sextherapy.
Someone can have a low sexual desire from the beginning. Not being sexually curious, having no sexual daydreams or fantasies or never having any longing to masturbate poses no problem as long as someone is alone. But if the person starts a relationship with someone with a moderate or high libido this difference can easily lead to relational problems.
Sexual desire can be present and then disappear. There can be a number of possible reasons to loose interest in sex, like illness, depression or stress. It can be a side effect of medication or be the result of sexual abuse, the menopause or everyday relational problems. Desire can also diminish if sex becomes predictable and boring.
If you are in a relationship in which one initiates sex all the time and the other one reacts negatively all the time you have to talk about it and find a solution that’s acceptable to both of you. If you cannot solve it go to a sexologist for help. Do this in time, before the relationship suffers!