Lastly Alexis.. Maybe she didn't contact him is because she is embarassed/scared or doesn't want MC to know (yet)..
Or something important came up and she forgot.. MC didn't contact her either to ask..
They aren't dating (yet?) so they don't really owe eachother an explanation..
Ehm, as I see it (I might be wrong though) Alexis is Layla's sister.
Layla is glowing with happiness in her room and her sister comes and asks her to tell her what's happening and Layla talks about the MC ... his name comes up and Alexis (shocked) connects the dots.
Now, on one side, we have Lalya who never actually had a real boyfriend and is ecstatic about how things are progressing and on another side, we have Alexis who is developing feelings for MC.
Yes, they are fuck-buddies and Alexis probably has more skeletons in her closet we yet have to discover but she is genuinely interested in developing a deeper relationship with our MC.
Indeed, a very conflicting situation for Alexis who probably loves her younger sister dearly and wishes her to be happy.