The wealth of exoplanets and the architectures of planetary systems that continue to emerge, is astounding and raises questions about the general picture of planet formation and evolution. To achieve such a stage of understanding, continuing studies of planetary systems in various stellar environments are essential. At present, of about 900 known exoplanets only about 50 around evolved stars are known. Searches for planets around evolved stars represent a very important complement to projects focused on the solar type stars because each detection of a planetary system around a sufficiently evolved star provides a snapshot of the changes in its dynamical configuration powered by evolution of the parent star. After the star leaves the MS, the tidal interactions become important and extend their range significantly. The observed absence of tight planetary orbits around giants has been interpreted in terms of a tidal interaction between an expanding giant and an orbiting planet. It appears that this interaction would make any planet in an initial orbit smaller than 0.3-0.4 au inevitably spiral into the stellar envelope. Observational evidences of such interactions were missing until very recently. Only very few examples of such interactions exist in the literature. Here we present those recently obtained within PTPS - a long-term RV survey of a sample of GK-evolved stars with the Hobby-Eberly Telescope in search for planets, recently extended with chemical abundance analysis.