For Further Reading:
40 Evidences You May Have Left Your First Love
https://www.reviveourhearts.com/articles/40-evidences-left-your-first-love/
Have You Left Your First Love?
https://www.desiringgod.org/articles/have-you-left-your-first-love
Signs Your Heart's Leaning in the Wrong Direction
http://chucklawless.com/2018/08/10-signs-your-hearts-leaning-in-the-wrong-direction/