O'Hara, who qualifies for Ireland through his grandparents, has played for England at Under-21 level but has never been selected for the senior squad, and is expected to make a decision on his international future this summer.
"I've always loved playing for England so I wouldn't want to upset anyone or disrespect the Ireland people as well, because I've got a lot of family in Ireland," he told Sky Sports.
"It's going to be a difficult decision to make and I don't want it to become a big deal in a way."
O'Hara could also be moving clubs if manager Harry Redknapp cannot offer him any hope of first-team football at White Hart Lane.
"If I can't break in there and Harry pulls me in and says I'm not going to feature as much as I'd like, then hopefully I've done enough this year (on loan at Portsmouth) to earn a move to a decent Premier League club," he said.
Source: PA
Source: PA