跟 + Person + 结婚
结婚 (jié hūn) is a separable verb meaning "to get married." Because it is separable, elements such as 了 or duration phrases can be inserted between 结 and 婚, as in 结了婚 (got married). It cannot take a direct object — to say "marry someone," use 跟某人结婚.
他们去年在海边结了婚。
tāmen qùnián zài hǎibiān jié le hūn.
They got married at the seaside last year.
她打算跟男朋友明年结婚。
tā dǎsuàn gēn nánpéngyou míngnián jiéhūn.
She plans to marry her boyfriend next year.
结了婚以后,他变得更有责任感了。
jié le hūn yǐhòu, tā biàn de gèng yǒu zérèngǎn le.
After getting married, he became more responsible.