与你以后 literally stands for With You Hereafter The user is likely indicating

Relation Nicknames

栖盼 [qī pàn]
栖 means to stay or reside 盼 means look forward to expect In essence this nickname implies the user ...
此后 [cĭ hòu]
此后 simply translates to Hereafter It signifies everything that happens postevent indicating ...
白发菇凉不离黑发先生黑发先生不弃白发菇凉 [bái fā gū liáng bù lí hēi fā xiān shēng hēi fā xiān shēng bù qì bái fā gū liáng]
This username depicts a steadfast and loyal love relationship Here 菇凉 is a phonetic pun that sounds ...
至此至彼 [zhì cĭ zhì bĭ]
至此 means from here and 至彼 means to there The username conveys the idea of traveling from one place ...
愿伴你终 [yuàn bàn nĭ zhōng]
Willing to Be With You Forever :愿 represents wish 伴你 means accompany you and 终 is often used to ...