Cannot get facebook to sync or attach to my Google calendar

[projectmx]

Last year I switched to android and began using google more. Before this my facebook app on my BB phone sync'd with my phones calendar and all of my events in facebook would automatically show up in my phone. Now that I am on android I cannot find any option on the phone or the facebook app to sync up the two calendars. I have tried on my laptop to go into facebook and copy and paste the export URL into my google calendar and it goes through the motions but when I look at my calendar none of my events or the events I am planning to attend show up on my google calendar. Please can someone help. I have searched like crazy but can't find anything that has proved helpful. If it helps I have a nexus 5 and a nexus 7 2012.