Should I confess my feelings to a divorced colleague? 42-year-old with a son seeking advice.

Thanks a lot for such a nuanced response to a set of rather complex emotions posed as questions. Now there has been some further developments. First, the interaction has graduated from text chats to frequent voice calls and even video calls. The points of touch have become varied and we are almost in constant touch as in case of two love birds . And the topics have become varied, even often including innuendos involving alluding possible physical intimacy. She has openly started saying that she finds me incredibly attractive even physically! We have been indirectly and lately directly talking about physical meetings and then now she has even set up a rendezvous. She informed me that she had long planned and arranged a travel to a tourist place with a friend long time back and then in passing informed me that she has booked an additional room for me. And requested me to join in. I jumped into the fray and have now booked my tickets. She tells me that her long standing friend on this trip knows about her state of marriage and she is going to tell her that we are in fact lovers !And the stay , for a couple of nights would also include a temple visit together …. Just to reiterate, my friend is no impetuous, love infatuated school girl; she has been the head of a school and has worked in responsible positions. And she also has two grown up children with newly set up families. But she says had it been possible, she would have loved to have a baby with me …. Secondly, I have been mildly persuading the lady to share my profile with her kids- so that they also get to feel that her mother's ex. classmate is also one with accomplishments. Incidentally I have a public profile which could be interesting to the NewGen kids. However, my friend probably doesn’t get the drift or unsure how to share this without having to reveal the intimacy level or doesn’t want to take any step forward now . Thirdly, I also notice that she also remotely keeps track of my activities , whether the maid has come , when I am taking food , whether my health /mood is as in case of a couple . She also sometimes even seems to be getting a little possessive about me , my being in touch with other lady batchmates , mostly in a good humoured manner ! Now in this back drop my questions are these: i) I am a little weary of getting into a physical relationship with a married lady (how so much she may love me ) as it feels unethical , I feel for the partner of the lady and also afraid that both me/ and the lady may also carry a feeling of guilt if we get into a physical relationship in the sly . So what would be the right thing to do on this planned rendezvous to be able to nicely avoid the physical part ? ii)I have been cautioning her to lock her phone lest her family member accidentally read her messages / hear our voice message exchanges. But she seems to have thrown all caution to winds without thinking about consequences. She is in constant touch with me .So how to get over this ? iii)And my hunch is that she would like to continue with the marriage and simultaneously carry on meeting me. to my mind, It doesn’t seem to go any where . So what should I do for letting her know that I expect her to come over in due course in a nice way? iv) I wanted her kids to know me as her mother’s friend , classmate . But she isn’t sharing my profile with them , nor is she interested that we ( her children and me) engage in usual conversation . What is that I need to do to get her think that getting her children to know me could be a good idea? Yours sincerely , Bholanath