Mercury and Venus share a friendly bond but Sun is inimical towards both thus reduces the positive energy of both the planets. People having these three planets in one house are garrulous and jabber a lot, often about things that only they find interesting. Such people struggle to come to terms with morality and ethics.
Moreover, there is a tint of jealousy in their nature too. They tend to spend a lot of time wandering aimlessly. Read No doubt, these natives tend to be attractive, communicative, and clever with a sugary speech, but they indulge in vices and antisocial activities, such as elopement, anti-religious tendencies, illicit relations. These natives tend to face humiliation and miseries, mostly on account of their habit to misuse knowledge and relations and the tendency to only care about themselves.