Why would a man hide his entire marriage on his Facebook profile?

[Minnie]

I use to date a man that claimed to have been single for 2 years before we met... we dated briefly but not very long... anyway he updated his status on Facebook and i noticed that a woman commented on his status who had the same last name as his... so being nosey, i clicked on her profile and to my surprise i saw many pics of them together and i saw that they were even married ! the reason i never noticed her profile before is because they had recently became Facebook friends after they got married... apparently they have been together for several years... but he has NO indication of even being in a relationship on his page.. all pics of just himself... i even saw a pic on his page were he appeared to have blocked someone out the pic, but when i went on his wife's page, i saw the same pic with her in it !!!! Why would a man hide a whole relationship from everyone