There is no reason to become hostile towards anyone here stating their opinion. This isn't an attack on you, but what we believe to be true as Catholics.
Truth is essential in a relationship. Lying hurts the person who is lied to but also the person who is lying. It is an offense to God, Who is the Creator, so it hurts the soul. If one has to hide close friendships then there is a problem. It is a lack of sincerity and a form of lying because it seeks to pretend that the friendship does not exist.
I was engaged to such a man, and by him, I was described as "Poly Anna" --- for being so very trusting. He had female friends and told lies about each situation. By the time it came out, it came out in a painful way on accident, and many people were hurt --- families were hurt by it as one developed into an obsession and the other into a brief affair. And please, also, do not insult me by inferring that anyone who has such an experience probably didn't know how to be a best friend. He had asked me to marry him, remember, I had the ring, we were planning precana, wedding, etc.. He explained he simply had a problem with being alone during the day, and constantly had to have someone to go out with for meals, since we were not in the same town, and sometimes traveled with work, he obliged himself. As for emotional intimacy: he told me he loved me every night, and we usually spoke every night. A few days after I had learned of his indiscretion in a very public way (an accident on Facebook), he had "moved on" to one of his friends, which then dissolved soon after. This pattern mimicked something earlier in our relationship which he refers to as his "evil self". He had later explained that I should not have asked why he lied to me, and it was my nature to "ask questions" to know the truth about things, not in a way where I ever picked on him --- he never said this --- but that even when it was apparent he had lied to the point that he admitted so, he did not intend for me to ask him to know the truth as he believed he had a right to lie in order to hide his private friends. He believed he was entitled to have private friends when he was married, as well, and wished for this type of open relationship when he is married. The reason for his betrayal? He blamed it on the fact that I was chaste, although, I was always open about it, and was clear from before we even started courting that this was what I believed was right before marriage and only would consider a man who was the same. He claimed he wanted the same, but changed his mind apparently, several times. My behavior was always modest, but I cannot claim the same of his 'friends' (with whom we shared mutual friends). Honesty is not a priority for those who lack a holy fear of God.
Good luck with that sort of man. It is a definite evil for one to tell another that they love that person while at lying to them. www.youtube.com