to have venus in the oposite sign of its own, either its aries or scorpio doesent have to mean it will show up agresivly, but its not the best place for planet to be in the environment totaly diferent than one its comeing from.
  even though ruler for bouth signs is mars the planet of agrasion it is important to pay atention on the other thinks in chart, aspects that venus make with mars and other planet too. one with venus in square will never have same love life as one with venus in trine, even though they bought have venus in aries. and i knew some people with this planet in aries who were so calm and peacefull or who even didnt have any love life at all, this is oposite of meaning for this position that gives people avanturistic, playfull, agressive, promiscuet aproach to love.

As  a Venus in Arien, i think i have a rather arrogant outlook toward relations with my opposite sex. Whether  its because things become predictable or just plain boredom, i seem to want to move on rather swiftly. I do have a certain style and a few silly fetishes, none of which are itringsically Arien but are tinged with Venusian motives. For instance, i'll dress for the occasion otherwise i wont bother, or theres got to be somthing in it for me or i wont go. I do look at my venus a lot and have now come to trerms that it is unaspected, which depressed me for a bit. This  i am going to observe as i journey through life and also compare those people with aspected venuses.

Rather curious question, why do you want to know about longevity? are you ill and worried about death? No responsible Astrologer will answer this question hon, cos its for God to decide (whomever you perceive your God to be)

as for rohiniranjan ---- very rambling nonsensical message hon, are you on the planet Earth?

Venus is where we attract love and affection in our natal charts by sign and house position and also how and where we might earn money....

LOL