Relationship and financial struggles

I've been in a relationship for more than two years, he is truly my best friend. I can't imagine my life without him. But there are so many aspects of our life and relationship that aren't healthy: we haven't had sex in months; our financial situation and how we view finances is a constant point of contention; his insecurities about my past relationships get in the way of us moving forward. I love him more than anything, but I want more when it comes to a relationship with someone I plan to spend the rest of my life with. However, the thought of walking away from him and the relationship rips my heart apart.

Lord I ask that you give me the strength and wisdom to work through this, please guide me towards the right path and help me remain convicted, with faith, in Your decision.