Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
Given your situation I definitely wouldn't recommend Paris. While there are some friendly people there, most folks are not really into making buddy-buddy with strangers. Also contrary to the popular believe most people there have nothing against Americans or don't want to speak English but it's just many suck at it.
Lisbon on the other hand has been ranked as the friendliest city, people there are usually highly proficient in English. The city is beautiful, lots to see, great nightlife and still at a very decent price compared to Northern European countries.