My message app isn't opening? Someone sent a bug I think how can I resolve this

Read here http://www.macrumors.com/2015/05/26/ios-bug-crashing-iphones-with-text-message/

the Solution 2 step:

1-put your iPhone date two month forward

2-go to settings > Messages >(under Message History, select keep messages 30 day)

NB: this will fix the problem but will delete all your messages inbox.

Greetings Joedono89,

Thanks for participating in the Apple Support Communities.

If the Messages app on your iPhone still quits unexpectedly after you received a message, the steps in this article can help:

If Messages quits unexpectedly after you get a text with a specific string of characters - Apple Support

All the best,

Jeremy