Let's say you meet a nice guy who 'ticks all the boxes', somewhat. He's a Christian, just not a 'deep' one but at least he's a Christian so that'll suffice right?
Now, I am not saying that if you are not a Christian you do not have morals because that is just not true. There are some awesome individuals who are cool, lovely and nice who are also not Christians. My thing is it all depends on what you place value on. For some, having a generic understanding of Christ, observing the bible and the holy days is enough as a prerequisite. For me however it is not enough. Every once in a while you might be opportune to meet such guys; he's lovely, nice, treats you well and is saved- just not that saved. He will be known as Mr. Nice. Here's my take on it however and feel free to disagree but hear me out first ;)
Mr. Nice won't wake up in the middle of the night to intercede for you and your family
Mr. Nice won't always take the initiative to start family devotions
Mr. Nice won't feel the need to be so 'involved' in church functions.
The list is endless but the summary is that Mr. Nice is just not enough. I've been there before and it can be so hard to disengage because you click on everything else but yet the most important factor is not there. I don't know about anyone else but I'm not a member of the 'Guide a guy to Christ' Ministries and I refuse to even check it out either.
Now, I'm not saying I'm looking for a Pastor because I'm really not but I also do not want to be the spiritual head of a home by default due to their being a spiritual imbalance. We are all aware of this verse;
Do not be unequally yoked with unbelievers. For what partnership can righteousness have with wickedness? Or what fellowship does light have with darkness?
2 Corinthians 6:14 (Berean Study Bible)
We're quick to use this verse for those who are not Christians but I wholeheartedly believe that it is applicable to Christians too. That is not to say that you should feel that you have 'arrived' and you are the most spiritual because you're actually not. What it does mean is that sometimes you have to push past your emotions and your present state; think about your future children and if this potential spouse will help guide them in the footsteps of Christ. Yes, it's possible that people change negatively after marriage but at least you saw and knew that they were not like that before. If you've never seen a person strive to actively better their relationship with Christ before what makes you think that this will change after marriage?
I know it is so much easier said than done but Grace makes all things possible and even if you've made that mistake in the past don't dwell on it. Keep it moving and keep striving to be the best Christian you can be. It's not about perfection but progression; once you desire in your heart to grow in Christ it will happen.