Bear with me. I am working this out as I write.
I think when friends say that a relationship or situation is 'complex', it is a code word for something else: Conflicted. Angry. Hurt. Damaging.
I remember having breakfast once with a woman who practices 'polyamory'. In other words, she has multiple relationships going at once. She was a Christian and we were at a conference together and when I discovered that she was living with two sexual partners, I decided to ask her if I could ask her some questions about it. She seemed kind of grateful that I was willing to talk about it with her, so we had breakfast.
In my head, I was trying to figure out how Christianity and polyamory jive. She gave her explanation, which was basically that she believed God created her to have more than one partner. At some point in the conversation, though, she told me that polyamorous relationships can get very 'complex' because your partner might be having a relationship with someone else and that person might be having relationship with your other partner and there might be yet another person waiting in the wings.
And it was at that moment that I felt that all this complexity can't possibly bring you closer to God.
The longer I am a Christian, the more I strive for simplicity in all of my relationships and dealings. If I start to get a sense that a relationship or situation is pulling my attention away from God, I seriously consider whether I need to make some changes. Keeping my eyes on the creator keeps my head clear.
Love God with all your heart and soul and mind.
Love your neighbor as yourself.
It isn't easy... but it sure is simple.