Can I sleep with my fiancé

I am recently engaged and currently living in a one-bedroom apartment with my fiancé and her 7-year-old daughter. While I was raised Catholic, my fiancé is in the process of converting to Catholicism. As part of our commitment to fully integrate our faith into our relationship, we have chosen to remain abstinent until marriage.

Since our engagement several months ago, I have been sleeping on the couch as a means of maintaining this commitment. While we have occasionally found ourselves in situations where boundaries were tested (without engaging in intercourse), we have been diligent in understanding where to draw the line and have worked together to establish clear limits.

However, I’ve recently been experiencing significant back pain from this arrangement, and as my fiancé’s daughter stays with her father on weekends, I found myself in a situation where I slept next to my fiancé in the bed, while she was already asleep. We made sure to maintain a strict physical boundary and did not touch, as we fully understand the potential consequences of such proximity.

My question is: is this behavior acceptable, given our commitment to abstinence and our shared values (would only be on the weekends since her daughter sleeps with her) I have already consulted a priest regarding cohabitation and the possibility of receiving communion, and he reassured me that it is permissible as long as we maintain a “brother and sister” relationship.

That being said, I’m seeking advice on this particular issue from others who may have navigated similar circumstances. While my only option is to continue living in this space, I am fully prepared to sleep on the couch if necessary to maintain our commitment to our faith.