Losing my Virginity

Hi, I'm 22 years old and still a virgin. My love life is quite a mess since I'm dating 3 guys at the moment... I really want to lose my virginity and have real sex but whenever I bring up the topic with the guys I'm dating with, they start to make up excuses. They say they're afraid of the responsibility they would have if they take my virginity. I don't get why they make it such a big deal. What do you think? How should I lose my virginity and enjoy real sex?