Texas---you have every right to question your wife's "social" life. And also, two friends of different genders do not say I love You if they are only friends. She may be just having an emotional affair but that type is just as leathal as a physical affair. You are separated for a very short time and I think, it is hard to know for sure the path your marriage will take.
You really need to go to General Questions section and start to learn the about the fog, emotional needs, love busting, Plan A & B. Your wife may be just a flirt who thinks the grass is greener on the other side OR you may not be tuned into her emotional needs. Whatever is the problem, you need to gain the wisdom to make healthy, loving decisions.
Please read Dr Harlsy's articles and especially his book, Surviving an Affair. As things come to the light, you have to know how to handle them and if there is a chance to save your marriage down the road, you can work toward that. Your children need some help with this too so the more you learn, the more you can help them.
You are in a very painful place.....more pain than one person can bear alone so you need support from those who understand. I understand your pain.....I have lived in it and it is truly unbearable at times. After trying everything, my chances of staying married become very dim. I had to learn that and it helped me to move on but one has to try to redirect the drowning tide first. If your marriage ends, you want to walk away with no regrets and be able to say I tried my best to save it.
You are on a tough road but there is lots of help here and lots of wisdom. Divorcing/Divorced section is probably not the best place for you right now.
TW