Does sex get boring with your spouse after a while?

My husband and I got married really young. We’ve been married for 4 years, he’s 26 and I’m 24. A lot of my husbands friends are still single, they make a lot of jokes about my husband being married so young. A part of me feels like there’s truth behind some of their jokes. Do men really grow tired of having sex with one woman (even though they’re in love)? Will I eventually crave sex with someone else? I’m 100 percent satisfied with our sex life, I’m just looking for honest opinions/advice from women who have experience with long term relationships.