Effort is the most important part in a relationship. A relationship without effort is like a car without gas. Useless and dissapointing. The relationship wont grow if both parties dont put time into it. Relationships are a two way commitment. Helping each other out little by little. Bit by bit. Dont just let your significant other do all the work. You companion will eventually get tired and weary because it's clear you dont care enough. Its too late to realize when they already left. Dont make yourself regret and question why you didnt appreciated their effort. Try to put as much effort as you can to maintain your relationship when you guys are still together.